MDAC 2.5 SDK - ODBC Programmer's Reference
Appendix D: Data Types
The identifier for the bit ODBC SQL data type is:
SQL_BIT
The following table shows the ODBC C data types to which bit SQL data may be converted. For an explanation of the columns and terms in the table, see "Converting Data from SQL to C Data Types."
| C type identifier | Test | *TargetValuePtr | *StrLen_or_IndPtr | SQLSTATE |
| SQL_C_CHAR SQL_C_WCHAR |
BufferLength > 1
BufferLength <= 1 |
Data
Undefined |
1
Undefined |
n/a
22003 |
| SQL_C_STINYINT SQL_C_UTINYINT SQL_C_TINYINT SQL_C_SBIGINT SQL_C_UBIGINT SQL_C_SSHORT SQL_C_USHORT SQL_C_SHORT SQL_C_SLONG SQL_C_ULONG SQL_C_LONG SQL_C_FLOAT SQL_C_DOUBLE SQL_C_NUMERIC |
None[a] | Data | Size of the C data type | n/a |
| SQL_C_BIT | None[a] | Data | 1[b] | n/a |
| SQL_C_BINARY | BufferLength >= 1
BufferLength < 1 |
Data
Undefined |
1
Undefined |
n/a
22003 |
[a] The value of BufferLength is ignored for this conversion. The driver assumes that the size of *TargetValuePtr is the size of the C data type.
[b] This is the size of the corresponding C data type.
When bit SQL data is converted to character C data, the possible values are "0" and "1".