C to SQL: Timestamp

The identifier for the timestamp ODBC C data type is:

SQL_C_TYPE_TIMESTAMP

The following table shows the ODBC SQL data types to which timestamp C data may be converted. For an explanation of the columns and terms in the table, see “Converting Data from C to SQL Data Types.”

SQL type identifier

Test

SQL- STATE

SQL_CHAR SQL_VARCHAR SQL_LONGVARCHAR

Column byte length >= Character byte length. 19 <= Column byte length < Character byte length. Column byte length < 19. Data value is not a valid timestamp.

n/a 22001 22001 22008

SQL_TYPE_DATE

Time fields are zero. Time fields are non-zero. Data value does not contain a valid date.

n/a 22008 22007

SQL_TYPE_TIME

Fractional seconds fields are zero. [a] Fractional seconds fields are non-zero. [a] Data value does not contain a valid time.

n/a 22008 22007

SQL_TYPE_ TIMESTAMP

Fractional seconds fields are not truncated. Fractional seconds fields are truncated. Data value is not a valid timestamp.

n/a 22008 22007

[a] The date fields of the timestamp structure are ignored.

For information about what values are valid in a SQL_C_TIMESTAMP structure, see “C Data Types.”

When timestamp C data is converted to character SQL data, the resulting character data is in the “yyyy-mm-dd hh:mm:ss[.f...]” format.

The driver ignores the length/indicator value when converting data from the timestamp C data type and assumes that the size of the data buffer is the size of the timestamp C data type. The length/indicator value is passed in the StrLen_or_Ind argument in SQLPutData and in the buffer specified with the StrLen_or_IndPtr argument in SQLBindParameter. The data buffer is specified with the DataPtr argument in SQLPutData and the ParameterValuePtr argument in SQLBindParameter.