Purpose

Adds or subtracts days from a given date.

Syntax

sword OCIDateAddDays ( OCIError          *err,
                       const OCIDate     *date, 
                       sb4                num_days,
                       OCIDate           *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

he given date from which to add or subtract.

num_days (IN)

Number of days to be added or subtracted. A negative value is subtracted.

result (IN/OUT)

Result of adding days to, or subtracting days from, date.

Returns

This function returns an error if an invalid date is passed to it.

Purpose

Adds or subtracts months from a given date.

Syntax

sword OCIDateAddMonths ( OCIError            *err,
                         const OCIDate       *date,
                         sb4                  num_months,
                         OCIDate             *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

The given date from which to add or subtract.

num_months (IN)

Number of months to be added or subtracted. A negative value is subtracted.

result (IN/OUT)

Result of adding days to, or subtracting days from, date.

Comments

If the input date is the last day of a month, then the appropriate adjustments are made to ensure that the output date is also the last day of the month. For example, Feb. 28 + 1 month = March 31, and November 30 – 3 months = August 31. Otherwise the result date has the same day component as date.

Returns

This function returns an error if an invalid date is passed to it.

Purpose

Performs a date assignment.

Syntax

sword OCIDateAssign ( OCIError         *err,
                      const OCIDate    *from, 
                      OCIDate          *to );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

from (IN)

Date to be assigned.

to (OUT)

Target of assignment.

Comments

This function assigns a value from one OCIDate variable to another.

Purpose

Checks if the given date is valid.

Syntax

sword OCIDateCheck ( OCIError          *err,
                     const OCIDate     *date, 
                     uword             *valid );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

Date to be checked.

valid (OUT)

Returns zero for a valid date; otherwise, it returns the logical operator OR combination of all error bits specified in Table 28-5.

For example, if the date passed in was 2/0/1990 25:61:10 in (month/day/year hours:minutes:seconds format), the error returned is:

OCI_DATE_INVALID_DAY | OCI_DATE_DAY_BELOW_VALID | OCI_DATE_INVALID_HOUR | 
   OCI_DATE_INVALID_MINUTE.

Returns

This function returns an error if date or valid pointer is NULL.

Purpose

Compares two dates.

Syntax

sword OCIDateCompare ( OCIError           *err, 
                       const OCIDate      *date1, 
                       const OCIDate      *date2,
                       sword              *result );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date1, date2 (IN)

Dates to be compared.

result (OUT)

Comparison result as listed in Table 28-6.

Returns

This function returns an error if an invalid date is passed to it.

Purpose

Gets the number of days between two dates.

Syntax

sword OCIDateDaysBetween ( OCIError            *err, 
                           const OCIDate       *date1, 
                           const OCIDate       *date2, 
                           sb4                 *num_days );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date1 (IN)

Input date.

date2 (IN)

Input date.

num_days (OUT)

Number of days between date1 and date2.

Comments

When the number of days between date1 and date2 is computed, the time is ignored.

Returns

This function returns an error if an invalid date is passed to it.

Purpose

Converts a character string to a date type according to the specified format.

Syntax

sword OCIDateFromText ( OCIError           *err,
                        const OraText      *date_str, 
                        ub4                 d_str_length, 
                        const OraText      *fmt,
                        ub1                 fmt_length, 
                        const OraText      *lang_name,
                        ub4                 lang_length, 
                        OCIDate            *date );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date_str (IN)

Input string to be converted to Oracle date.

d_str_length (IN)

Size of the input string. If the length is –1, then date_str is treated as a NULL-terminated string.

fmt (IN)

Conversion format. If fmt is a NULL pointer, then the string is expected to be in "DD-MON-YY" format.

fmt_length (IN)

Length of the fmt parameter.

lang_name (IN)

Language in which the names and abbreviations of days and months are specified. If lang_name is a NULL string, (text *)0, then the default language of the session is used.

lang_length (IN)

Length of the lang_name parameter.

date (OUT)

Given string converted to date.

Comments

See the TO_DATE conversion function described in the Oracle Database SQL Language Referencefor a description of format and multilingual arguments.

Returns

This function returns an error if it receives an invalid format, language, or input string.

Purpose

Gets the year, month, and day stored in an Oracle date.

Syntax

void OCIDateGetDate ( const OCIDate    *date,
                      sb2              *year,
                      ub1              *month, 
                      ub1              *day ); 

Parameters

date (IN)

Oracle date whose year, month, day data is retrieved.

year (OUT)

Year value returned.

month (OUT)

Month value returned.

day (OUT)

Day value returned.

Comments

None.

Purpose

Gets the time stored in an Oracle date.

Syntax

void OCIDateGetTime ( const OCIDate    *date,
                      ub1              *hour,
                      ub1              *min, 
                      ub1              *sec );

Parameters

date (IN)

Oracle date whose time data is retrieved.

hour (OUT)

Hour value returned.

min (OUT)

Minute value returned.

sec (OUT)

Second value returned.

Returns

Returns the time information in the form: hour, minute and seconds.

Purpose

Gets the date of the last day of the month in a specified date.

Syntax

sword OCIDateLastDay ( OCIError            *err,
                       const OCIDate       *date,
                       OCIDate             *last_day );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

Input date.

last_day (OUT)

Last day of the month in date.

Returns

This function returns an error if an invalid date is passed to it.

Purpose

Gets the date of the next day of the week after a given date.

Syntax

sword OCIDateNextDay ( OCIError            *err,
                       const OCIDate       *date,
                       const OraText       *day, 
                       ub4                  day_length,
                       OCIDate             *next_day );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

Returned date should be later than this date.

day (IN)

First day of the week named by this is returned.

day_length (IN)

Length in bytes of string day.

next_day (OUT)

First day of the week named by day that is later than date.

Returns

Returns the date of the first day of the week named by day that is later than date.

Example

The following code example shows how to get the date of the next Monday after April 18, 1996 (a Thursday).

Getting the Date for a Specific Day After a Specified Date

OCIDate one_day, next_day;
/* Add code here to set one_day to be '18-APR-96' */
OCIDateNextDay(err, &one_day, "MONDAY", strlen("MONDAY"), &next_day);

OCIDateNextDay() returns "22-APR-96".

This function returns an error if an invalid date or day is passed to it.

Purpose

Set the values in an Oracle date.

Syntax

void OCIDateSetDate ( OCIDate    *date, 
                      sb2         year, 
                      ub1         month, 
                      ub1         day );

Parameters

date (OUT)

Oracle date whose time data is set.

year (IN)

Year value to be set.

month (IN)

Month value to be set.

day (IN)

Day value to be set.

Comments

None.

Purpose

Sets the time information in an Oracle date.

Syntax

void OCIDateSetTime ( OCIDate    *date,
                      ub1         hour, 
                      ub1         min, 
                      ub1         sec ); 

Parameters

date (OUT)

Oracle date whose time data is set.

hour (IN)

Hour value to be set.

min (IN)

Minute value to be set.

sec (IN)

Second value to be set.

Comments

None.

Purpose

Gets the current system date and time of the client.

Syntax

sword OCIDateSysDate ( OCIError       *err,
                       OCIDate        *sys_date );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

sys_date (OUT)

Current system date and time of the client.

Comments

None.

Purpose

Performs a datetime assignment.

Syntax

sword OCIDateTimeAssign ( void                *hndl, 
                          OCIError            *err,
                          const OCIDateTime   *from,
                          OCIDateTime         *to );

Parameters

hndl (IN)

The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR; otherwise, the default is used.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

from (IN)

Source, right-hand side (rhs) datetime to be assigned.

to (OUT)

Target, left-hand side (lhs) of assignment.

Comments

This function performs an assignment from the from datetime to the to datetime for any of the datetime types listed in the description of the type parameter.

The type of the output is the same as that of the input.

Returns

OCI_SUCCESS; or OCI_ERROR.

Purpose

Checks if the given date is valid.

Syntax

sword OCIDateTimeCheck ( void                *hndl,
                         OCIError            *err, 
                         const OCIDateTime   *date, 
                         ub4                 *valid );

Parameters

hndl (IN)

The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR, otherwise, the default is used.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

The date to be checked.

valid (OUT)

Returns zero for a valid date; otherwise, it returns the logical operator OR combination of all the error bits specified in Table 28-7.

So, for example, if the date passed in was 2/0/1990 25:61:10 in (month/day/year hours:minutes:seconds format), the error returned is:

 OCI_DT_INVALID_DAY | OCI_DT_DAY_BELOW_VALID | 
     OCI_DT_INVALID_HOUR | OCI_DT_INVALID_MINUTE.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; OCI_ERROR, if date or valid is a NULL pointer.

Purpose

Compares two datetime values.

Syntax

sword OCIDateTimeCompare ( void               *hndl,
                           OCIError           *err,
                           const OCIDateTime  *date1, 
                           const OCIDateTime  *date2,
                           sword              *result );

Parameters

hndl (IN/OUT)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date1, date2 (IN)

Dates to be compared.

result (OUT)

Comparison result as listed in Table 28-8.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; OCI_ERROR, if an invalid date is used or if the input date arguments are not of mutually comparable types.

Purpose

Constructs a datetime descriptor.

Syntax

sword OCIDateTimeConstruct ( void          *hndl,
                             OCIError      *err,
                             OCIDateTime   *datetime,
                             sb2            year,
                             ub1            month,
                             ub1            day,
                             ub1            hour,
                             ub1            min,
                             ub1            sec,
                             ub4            fsec,
                             OraText       *timezone,
                             size_t         timezone_length );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to an OCIDateTime descriptor.

year (IN)

Year value.

month (IN)

Month value.

day (IN)

Day value.

hour (IN)

Hour value.

min (IN)

Minute value.

sec (IN)

Second value.

fsec (IN)

Fractional second value.

timezone (IN)

Time zone string. A string representation of time zone displacement is the difference (in hours and minutes) between local time and UTC (Coordinated Universal Time—formerly Greenwich Mean Time) in the format "[+|-][HH:MM]". For example, "-08:00".

timezone_length (IN)

Length of the time zone string.

Comments

The type of the datetime is the type of the OCIDateTime descriptor. Only the relevant fields based on the type are used. For types with a time zone, the date and time fields are assumed to be in the local time of the specified time zone.

If the time zone is not specified, then the session default time zone is assumed.

Returns

OCI_SUCCESS; or OCI_ERROR, if datetime is not valid.

Purpose

Converts one datetime type to another.

Syntax

sword OCIDateTimeConvert ( void         *hndl,
                           OCIError     *err, 
                           OCIDateTime  *indate, 
                           OCIDateTime  *outdate );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

indate (IN)

A pointer to the input date.

outdate (OUT)

A pointer to the output datetime.

Comments

This function converts one datetime type to another. The result type is the type of the outdate descriptor. The session default time zone (ORA_SDTZ) is used when converting a datetime without a time zone to one with a time zone.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE if err is NULL; or OCI_ERROR, if the conversion is not possible with the given input values.

Purpose

Converts an array containing a date to an OCIDateTime descriptor.

Syntax

sword OCIDateTimeFromArray ( void               *hndl,
                             OCIError           *err, 
                             const ub1          *inarray,
                             ub4                *len 
                             ub1                 type,
                             OCIDateTime        *datetime,
                             const OCIInterval  *reftz,
                             ub1                 fsprec );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inarray(IN)

Array of ub1, containing the date.

len (IN)

Length of inarray.

type (IN)

Type of the resulting datetime. The array is converted to the specific SQLT type.

datetime (OUT)

Pointer to an OCIDateTime descriptor.

reftz (IN)

Descriptor for OCIInterval used as a reference when converting a SQLT_TIMESTAMP_LTZ type.

fsprec (IN)

Fractional second precision of the resulting datetime.

Returns

OCI_SUCCESS; or OCI_ERROR if type is invalid.

Purpose

Converts the given string to an Oracle datetime type in the OCIDateTime descriptor, according to the specified format.

Syntax

sword OCIDateTimeFromText ( void               *hndl,
                            OCIError           *err, 
                            const OraText      *date_str,
                            size_t              dstr_length,
                            const OraText      *fmt,
                            ub1                 fmt_length, 
                            const OraText      *lang_name,
                            size_t              lang_length, 
                            OCIDateTime        *datetime );

Parameters

hndl (IN)

The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR; otherwise, the default is used.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date_str (IN)

The input string to be converted to an Oracle datetime.

dstr_length (IN)

The size of the input string. If the length is –1, then date_str is treated as a NULL-terminated string.

fmt (IN)

The conversion format. If fmt is a NULL pointer, then the string is expected to be in the default format for the datetime type.

fmt_length (IN)

The length of the fmt parameter.

lang_name (IN)

Specifies the language in which the names and abbreviations of months and days are specified. The default language of the session is used if lang_name is NULL (lang_name = (text *)0).

lang_length (IN)

The length of the lang_name parameter.

datetime (OUT)

The given string converted to a date.

Comments

See the description of the TO_DATE conversion function in the Oracle Database SQL Language Reference for a description of the format argument.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE if err is NULL; or OCI_ERROR, if any of the following is true:

• An invalid format is used.

• An unknown language is used.

• An invalid input string is used.

Purpose

Gets the date (year, month, day) portion of a datetime value.

Syntax

sword OCIDateTimeGetDate ( void               *hndl,
                           OCIError           *err, 
                           const OCIDateTime  *datetime,
                           sb2                *year, 
                           ub1                *month, 
                           ub1                *day );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to an OCIDateTime descriptor from which date information is retrieved.

year (OUT)

month (OUT)

day (OUT)

The retrieved year, month, and day values.

Comments

This function gets the date (year, month, day) portion of a datetime value.

Returns

OCI_SUCCESS or OCI_ERROR.

Purpose

Gets the time (hour, min, second, fractional second) of a datetime value.

Syntax

sword OCIDateTimeGetTime ( void          *hndl, 
                           OCIError      *err, 
                           OCIDateTime   *datetime, 
                           ub1           *hour,
                           ub1           *min, 
                           ub1           *sec, 
                           ub4           *fsec );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to an OCIDateTime descriptor from which time information is retrieved.

hour (OUT)

The retrieved hour value.

min (OUT)

The retrieved minute value.

sec (OUT)

The retrieved second value.

fsec (OUT)

The retrieved fractional second value.

Comments

This function gets the time portion (hour, min, second, fractional second) from a given datetime value.

This function returns an error if the given datetime does not contain time information.

Returns

OCI_SUCCESS; or OCI_ERROR, if datetime does not contain time (SQLT_DATE).

Purpose

Gets the time zone name portion of a datetime value.

Syntax

sword OCIDateTimeGetTimeZoneName ( void               *hndl, 
                                   OCIError           *err, 
                                   const OCIDateTime  *datetime, 
                                   ub1                *buf,
                                   ub4                *buflen, );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to an OCIDateTime descriptor.

buf (OUT)

Buffer to store the retrieved time zone name.

buflen (IN/OUT)

The size of the buffer (IN). The size of the name field (OUT)

Comments

This function gets the time portion (hour, min, second, fractional second) from a given datetime value.

This function returns an error if the given datetime does not contain time information.

Returns

OCI_SUCCESS; or OCI_ERROR, if datetime does not contain a time zone (SQLT_DATE, SQLT_TIMESTAMP).

Purpose

Gets the time zone (hour, minute) portion of a datetime value.

Syntax

sword OCIDateTimeGetTimeZoneOffset ( void               *hndl, 
                                     OCIError           *err, 
                                     const OCIDateTime  *datetime, 
                                     sb1                *hour,
                                     sb1                *min, );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to an OCIDateTime descriptor.

hour (OUT)

The retrieved time zone hour value.

min (OUT)

The retrieved time zone minute value.

Comments

This function gets the time zone hour and the time zone minute portion from a given datetime value.

This function returns an error if the given datetime does not contain time information.

Returns

OCI_SUCCESS; or OCI_ERROR, if datetime does not contain a time zone (SQLT_DATE, SQLT_TIMESTAMP).

Purpose

Adds an interval to a datetime to produce a resulting datetime.

Syntax

sword OCIDateTimeIntervalAdd ( void         *hndl, 
                               OCIError     *err, 
                               OCIDateTime  *datetime, 
                               OCIInterval  *inter, 
                               OCIDateTime  *outdatetime );

Parameters

hndl (IN)

The user session or environment handle. If a session handle is passed, the addition occurs in the session default calendar.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to the input datetime.

inter (IN)

Pointer to the input interval.

outdatetime (OUT)

Pointer to the output datetime. The output datetime is of same type as the input datetime.

Returns

OCI_SUCCESS, if the function completes successfully; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the resulting date is before Jan 1, -4713 or is after Dec 31, 9999.

Purpose

Subtracts an interval from a datetime and stores the result in a datetime.

Syntax

sword OCIDateTimeIntervalSub ( void         *hndl,
                               OCIError     *err, 
                               OCIDateTime  *datetime, 
                               OCIInterval  *inter,
                               OCIDateTime  *outdatetime );

Parameters

hndl (IN)

The user session or environment handle. If a session handle is passed, the subtraction occurs in the session default calendar. The interval is assumed to be in the session calendar.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to the input datetime value.

inter (IN)

Pointer to the input interval.

outdatetime (OUT)

Pointer to the output datetime. The output datetime is of same type as the input datetime.

Returns

OCI_SUCCESS, if the function completes successfully; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the resulting date is before Jan 1, -4713 or is after Dec 31, 9999.

Purpose

Takes two datetimes as input and stores their difference in an interval.

Syntax

sword OCIDateTimeSubtract ( void         *hndl, 
                            OCIError     *err,
                            OCIDateTime  *indate1,
                            OCIDateTime  *indate2, 
                            OCIInterval  *inter );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

indate1 (IN)

Pointer to the subtrahend (number to be subtracted).

indate2 (IN)

Pointer to the minuend (number to be subtracted from).

inter (OUT)

Pointer to the output interval.

Returns

OCI_SUCCESS, if the function completes successfully; OCI_INVALID_HANDLE if err is NULL pointer; or OCI_ERROR, if the input datetimes are not of comparable types.

Purpose

Gets the system current date and time as a time stamp with time zone.

Syntax

sword OCIDateTimeSysTimeStamp ( void           *hndl,
                                OCIError       *err, 
                                OCIDateTime    *sys_date );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

sys_date (OUT)

Pointer to the output time stamp.

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

Converts an OCIDateTime descriptor to an array.

Syntax

sword OCIDateTimeToArray ( void               *hndl,
                           OCIError           *err, 
                           const OCIDateTime  *datetime, 
                           const OCIInterval  *reftz,
                           ub1                *outarray, 
                           ub4                *len 
                           ub1                 fsprec );

Parameters

hndl (IN)

The OCI user session handle or environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

datetime (IN)

Pointer to an OCIDateTime descriptor.

reftz (IN)

Descriptor for the OCIInterval used as a reference when converting the SQL_TIMESTAMP_LTZ type.

outarray(OUT)

Array of bytes containing the date.

len (OUT)

Length of outarray.

fsprec (IN)

Fractional second precision in the array.

Comments

The array is allocated by OCI and its length is returned.

Returns

OCI_SUCCESS; or OCI_ERROR, if datetime is invalid.

Purpose

Converts the given date to a string according to the specified format.

Syntax

sword OCIDateTimeToText ( void                *hndl, 
                          OCIError            *err, 
                          const OCIDateTime   *date, 
                          const OraText       *fmt,
                          ub1                  fmt_length, 
                          ub1                  fsprec,
                          const OraText       *lang_name, 
                          size_t               lang_length, 
                          ub4                 *buf_size, 
                          OraText             *buf );

Parameters

hndl (IN)

The OCI user session handle or environment handle. If a user session handle is passed, the conversion occurs in the session's NLS_LANGUAGE and the session's NLS_CALENDAR; otherwise, the default is used.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

Oracle datetime value to be converted.

fmt (IN)

The conversion format. If it is a NULL string pointer, (text*)0, then the date is converted to a character string in the default format for that type.

fmt_length (IN)

The length of the fmt parameter.

fsprec (IN)

Specifies the precision in which the fractional seconds value is returned.

lang_name (IN)

Specifies the language in which the names and abbreviations of months and days are returned. The default language of the session is used if lang_name is NULL (lang_name = (OraText *)0).

lang_length (IN)

The length of the lang_name parameter.

buf_size (IN/OUT)

The size of the buf buffer (IN).

The size of the resulting string after the conversion (OUT).

buf (OUT)

The buffer into which the converted string is placed.

Comments

See the description of the TO_DATE conversion function in the Oracle Database SQL Language Reference for a description of format and multilingual arguments. The converted NULL-terminated date string is stored in the buffer buf.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is NULL; or OCI_ERROR, if any of the following statements is true:

• The buffer is too small.

• An invalid format is used.

• An unknown language is used.

• There is an overflow error.

Purpose

Converts a date type to a character string.

Syntax

sword OCIDateToText ( OCIError                  *err, 
                      const OCIDate             *date, 
                      const OraText             *fmt, 
                      ub1                        fmt_length, 
                      const OraText             *lang_name,
                      ub4                        lang_length, 
                      ub4                       *buf_size, 
                      OraText                   *buf );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date (IN)

Oracle date to be converted.

fmt (IN)

Conversion format. If NULL, (text *)0, then the date is converted to a character string in the default date format, DD-MON-YY.

fmt_length (IN)

Length of the fmt parameter.

lang_name (IN)

Specifies the language in which names and abbreviations of months and days are returned; the default language of the session is used if lang_name is NULL ((text *)0).

lang_length (IN)

Length of the lang_name parameter.

buf_size (IN/OUT)

Size of the buffer (IN). Size of the resulting string is returned with this parameter (OUT).

buf (OUT)

Buffer into which the converted string is placed.

Comments

Converts the given date to a string according to the specified format. The converted NULL-terminated date string is stored in buf.

See the TO_DATE conversion function described in the Oracle Database SQL Language Reference for a description of format and multilingual arguments.

Returns

This function returns an error if the buffer is too small, or if the function is passed an invalid format or unknown language. Overflow also causes an error. For example, converting a value of 10 into format '9' causes an error.

Purpose

Converts a date from one time zone to another.

Syntax

sword OCIDateZoneToZone ( OCIError           *err, 
                          const OCIDate      *date1, 
                          const OraText      *zon1,
                          ub4                 zon1_length, 
                          const OraText      *zon2, 
                          ub4                 zon2_length, 
                          OCIDate            *date2 );

Parameters

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

date1 (IN)

Date to convert.

zon1 (IN)

Zone of the input date.

zon1_length (IN)

Length in bytes of zon1.

zon2 (IN)

Zone to be converted to.

zon2_length (IN)

Length in bytes of zon2.

date2 (OUT)

Converted date (in zon2).

Comments

Converts a given date date1 in time zone zon1 to a date date2 in time zone zon2. Works only with North American time zones.

For a list of valid zone strings, see the description of the NEW_TIME function in the Oracle Database SQL Language Reference. Examples of valid zone strings include:

• AST, Atlantic Standard Time

• ADT, Atlantic Daylight Time

• BST, Bering Standard Time

• BDT, Bering Daylight Time

Returns

This function returns an error if an invalid date or time zone is passed to it.

Purpose

Adds two intervals to produce a resulting interval.

Syntax

sword OCIIntervalAdd ( void         *hndl, 
                       OCIError     *err, 
                       OCIInterval  *addend1, 
                       OCIInterval  *addend2, 
                       OCIInterval  *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

addend1 (IN)

Interval to be added.

addend2 (IN)

Interval to be added.

result (OUT)

The resulting interval (addend1 + addend2).

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:

• The two input intervals are not mutually comparable.

• The resulting year is greater than SB4MAXVAL.

• The resulting year is less than SB4MINVAL.

Purpose

Copies one interval to another.

Syntax

void OCIIntervalAssign ( void              *hndl, 
                         OCIError          *err, 
                         const OCIInterval *inpinter, 
                         OCIInterval       *outinter );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inpinter (IN)

Input interval.

outinter (OUT)

Output interval.

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

Checks the validity of an interval.

Syntax

sword OCIIntervalCheck ( void               *hndl,
                        OCIError            *err,
                        const OCIInterval   *interval,
                        ub4                 *valid );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

interval (IN)

Interval to be checked.

valid (OUT)

Returns zero if the interval is valid; otherwise, it returns the logical operator OR combination of the codes specified in Table 28-9.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, on error.

Purpose

Compares two intervals.

Syntax

sword OCIIntervalCompare (void          *hndl, 
                          OCIError      *err,
                          OCIInterval   *inter1, 
                          OCIInterval   *inter2, 
                          sword         *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inter1 (IN)

Interval to be compared.

inter2 (IN)

Interval to be compared.

result (OUT)

Comparison result as specified in Table 28-10.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the input values are not mutually comparable.

Purpose

Divides an interval by an Oracle NUMBER to produce an interval.

Syntax

sword OCIIntervalDivide ( void         *hndl, 
                          OCIError     *err, 
                          OCIInterval  *dividend, 
                          OCINumber    *divisor, 
                          OCIInterval  *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

dividend (IN)

Interval to be divided.

divisor (IN)

Oracle NUMBER dividing dividend.

result (OUT)

The resulting interval ( dividend / divisor).

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

Converts an Oracle NUMBER to an interval.

Syntax

sword OCIIntervalFromNumber ( void               *hndl, 
                              OCIError           *err,
                              OCIInterval        *interval,
                              OCINumber          *number );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

interval (OUT)

Interval result.

number (IN)

Oracle NUMBER to be converted (in years for YEAR TO MONTH intervals and in days for DAY TO SECOND intervals).

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

When given an interval string, returns the interval represented by the string. The type of the interval is the type of the result descriptor.

Syntax

sword OCIIntervalFromText ( void           *hndl, 
                            OCIError       *err, 
                            const OraText  *inpstring,
                            size_t          str_len,
                            OCIInterval    *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inpstring (IN)

Input string.

str_len (IN)

Length of the input string.

result (OUT)

Resultant interval.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:

• There are too many fields in the literal string.

• The year is out of range (–4713 to 9999).

• The month is out of range (1 to 12).

• The day of month is out of range (1 to 28...31).

• The hour is out of range (0 to 23).

• The hour is out of range (0 to 11).

• The minutes are out of range (0 to 59).

• The seconds in the minute are out of range (0 to 59).

• The seconds in the day are out of range (0 to 86399).

• The interval is invalid.

Purpose

Returns an OCI_DTYPE_INTERVAL_DS of data type OCIInterval with the region ID set (if the region is specified in the input string) and the current absolute offset, or an absolute offset with the region ID set to 0.

Syntax

sword OCIIntervalFromTZ ( void           *hndl, 
                          OCIError       *err, 
                          const oratext  *inpstring,
                          size_t          str_len, 
                          OCIInterval    *result ) ;

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inpstring (IN)

Pointer to the input string.

str_len (IN)

Length of inpstring.

result (OUT)

Output interval.

Returns

OCI_SUCCESS, on success; OCI_INVALID_HANDLE, if err is NULL; or OCI_ERROR, if there is a bad interval type or there are time zone errors.

Comments

The input string must be of the form [+/-]TZH:TZM or 'TZR [TZD]'

Purpose

Gets values of day, hour, minute, and second from an interval.

Syntax

sword OCIIntervalGetDaySecond (void               *hndl, 
                               OCIError           *err, 
                               sb4                *dy, 
                               sb4                *hr,
                               sb4                *mm, 
                               sb4                *ss, 
                               sb4                *fsec, 
                               const OCIInterval  *interval );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

dy (OUT)

Number of days.

hr (OUT)

Number of hours.

mm (OUT)

Number of minutes.

ss (OUT)

Number of seconds.

fsec (OUT)

Number of nano seconds.

interval (IN)

The input interval.

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

Gets year and month from an interval.

Syntax

sword OCIIntervalGetYearMonth ( void               *hndl, 
                                OCIError           *err, 
                                sb4                *yr,
                                sb4                *mnth,
                                const OCIInterval  *interval );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

yr (OUT)

Year value.

mnth (OUT)

Month value.

interval (IN)

The input interval.

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

Multiplies an interval by an Oracle NUMBER to produce an interval.

Syntax

sword OCIIntervalMultiply ( void               *hndl, 
                            OCIError           *err, 
                            const OCIInterval  *inter,
                            OCINumber          *nfactor,
                            OCIInterval        *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

inter (IN)

Interval to be multiplied.

nfactor (IN)

Oracle NUMBER to be multiplied.

result (OUT)

The resulting interval (inter * nfactor).

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:

• The resulting year is greater than SB4MAXVAL.

• The resulting year is less than SB4MINVAL.

Purpose

Sets day, hour, minute, and second in an interval.

Syntax

sword OCIIntervalSetDaySecond ( void               *hndl, 
                                OCIError           *err, 
                                sb4                 dy,
                                sb4                 hr,
                                sb4                 mm, 
                                sb4                 ss, 
                                sb4                 fsec, 
                                OCIInterval        *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

dy (IN)

Number of days.

hr (IN)

Number of hours.

mm (IN)

Number of minutes.

ss (IN)

Number of seconds.

fsec (IN)

Number of nano seconds.

result (OUT)

The resulting interval.

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

Sets year and month in an interval.

Syntax

sword OCIIntervalSetYearMonth ( void               *hndl, 
                                OCIError           *err, 
                                sb4                 yr,
                                sb4                 mnth,
                                OCIInterval        *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

yr (IN)

Year value.

mnth (IN)

Month value.

result (OUT)

The resulting interval.

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:

• The resulting year is greater than SB4MAXVAL.

• The resulting year is less than SB4MINVAL.

Purpose

Subtracts two intervals and stores the result in an interval.

Syntax

sword OCIIntervalSubtract ( void         *hndl,
                            OCIError     *err, 
                            OCIInterval  *minuend, 
                            OCIInterval  *subtrahend,
                            OCIInterval  *result );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

minuend (IN)

The interval to be subtracted from.

subtrahend (IN)

The interval subtracted from minuend.

result (OUT)

The resulting interval (minuend - subtrahend).

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if any of the following statements is true:

• The resulting year is greater than SB4MAXVAL.

• The resulting year is less than SB4MINVAL.

• The two input intervals are not mutually comparable.

Purpose

Converts an interval to an Oracle NUMBER.

Syntax

sword OCIIntervalToNumber ( void               *hndl, 
                            OCIError           *err,
                            OCIInterval        *interval,
                            OCINumber          *number );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

interval (IN)

Interval to be converted.

number (OUT)

Oracle NUMBER result (in years for YEARMONTH interval and in days for DAYSECOND).

Comments

Fractional portions of the date (for instance, minutes and seconds if the unit chosen is hours) are included in the Oracle NUMBER produced. Excess precision is truncated.

Returns

OCI_SUCCESS; or OCI_INVALID_HANDLE, if err is a NULL pointer.

Purpose

When given an interval, produces a string representing the interval.

Syntax

sword OCIIntervalToText ( void               *hndl,
                          OCIError           *err,
                          const OCIInterval  *interval,
                          ub1                 lfprec,
                          ub1                 fsprec,
                          OraText            *buffer, 
                          size_t              buflen,
                          size_t             *resultlen );

Parameters

hndl (IN)

The OCI user session handle or the environment handle.

err (IN/OUT)

The OCI error handle. If there is an error, it is recorded in err, and this function returns OCI_ERROR. Obtain diagnostic information by calling OCIErrorGet().

interval (IN)

Interval to be converted.

lfprec (IN)

Leading field precision. (The number of digits used to represent the leading field.)

fsprec (IN)

Fractional second precision of the interval (the number of digits used to represent the fractional seconds).

buffer (OUT)

Buffer to hold the result.

buflen (IN)

The length of buffer.

resultlen (OUT)

The length of the result placed into buffer.

Comments

The interval literal is output as 'year' or '[year-]month' for INTERVAL YEAR TO MONTH intervals and as 'seconds' or 'minutes[:seconds]' or 'hours[:minutes[:seconds]]' or 'days[ hours[:minutes[:seconds]]]' for INTERVAL DAY TO SECOND intervals (where optional fields are surrounded by brackets).

Returns

OCI_SUCCESS; OCI_INVALID_HANDLE, if err is a NULL pointer; or OCI_ERROR, if the buffer is not large enough to hold the result.