SQLBindCol

Function

SQLBindCol is used to associate (bind) columns in a result set to an application data buffer.

Prototype

SQLRETURN SQLBindCol(SQLHSTMT       StatementHandle,    
                     SQLUSMALLINT   ColumnNumber,     
                     SQLSMALLINT    TargetType,
                     SQLPOINTER     TargetValuePtr,
                     SQLLEN         BufferLength,
                     SQLLEN         *StrLen_or_IndPtr);

Parameter

**Table 1** SQLBindCol parameters
Keyword	Description
StatementHandle	Statement handle.
ColumnNumber	Number of the column to be bound. The column number starts with 0 and increases in ascending order. Column 0 is the bookmark column. If no bookmark column is set, column numbers start at 1.
TargetType	The C data type in the buffer.
TargetValuePtr	Output parameter: pointer to the buffer bound with the column. The SQLFetch function returns data in the buffer. If TargetValuePtr is null, StrLen_or_IndPtr is a valid value.
BufferLength	Size of the TargetValuePtr buffer in bytes available to store the column data.
StrLen_or_IndPtr	Output parameter: pointer to the length or indicator of the buffer. If StrLen_or_IndPtr is null, no length or indicator is used.

Return Values

SQL_SUCCESS indicates that the call succeeded.
SQL_SUCCESS_WITH_INFO indicates some warning information is displayed.
SQL_ERROR indicates major errors, such as memory allocation and connection failures.
SQL_INVALID_HANDLE indicates that invalid handles were called. Values returned by other APIs are similar to the preceding values.

Precautions

If SQLBindCol returns SQL_ERROR or SQL_SUCCESS_WITH_INFO, the application can then call SQLGetDiagRec, with HandleType and Handle set to SQL_HANDLE_STMT and StatementHandle, respectively, to obtain the SQLSTATE value. The SQLSTATE value provides the detailed function calling information.