MDAC 2.5 SDK - ODBC Programmer's Reference
Appendix D: Data Types
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 | SQLSTATE |
| 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_WCHAR SQL_WVARCHAR SQL_WLONGVARCHAR |
Column character length >= Character length of data
19 <= Column character length < Character length of data Column character length < 19 Data value is not a valid timestamp |
n/a 22001 22001 22008 |
| SQL_TYPE_DATE | Time fields are zero
Time fields are nonzero 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 nonzero[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 the section "C Data Types," earlier in this appendix.
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.