IIapi_getColumnInfo() Function—Return Additional Information about Columns
The IIapi_getColumnInfo() function retrieves additional information about columns. The information for a column is available after it has been retrieved by IIapi_getColumns().
This function has the following syntax:
II_VOID IIapi_getColumnInfo( IIAPI_GETCOLINFOPARM *getColInfoParm );
typedef struct _ IIAPI _GETCOLINFOPARM
{
II_PTR gi_stmtHandle;
II_INT2 gi_columnNumber;
IIAPI_STATUS gi_status;
II_ULONG gi_mask;
II_UINT8 gi_lobLength;
} IIAPI_GETCOLINFOPARM;
This function has the following parameters:
gi_stmtHandle
Type: input
Specifies the statement handle identifying the query.
gi_columnNumber
Type: input
Specifies the number of the column for which information is to be returned. This parameter must contain a non-zero positive integer that cannot exceed the total number of columns in a row.
gi_status
Type: immediate output
Returns IIAPI_ST_SUCCESS if the column information is successfully returned. Returns IIAPI_ST_FAILURE if gi_columnNumber is less than 1 or greater than the number of columns in rows returned by the statement.
gi_mask
Type: immediate output
Specifies the mask indicating the available column information. This parameter is 0 or a mask of the following values:
IIAPI_GI_LOB_LENGTH
gi_lobLength
Type: immediate output
Specifies the length of a LOB column as indicated by the DBMS. The length is available once the first segment of the LOB has been retrieved. Also provides the length of a LOB value associated with a LOB locator. This parameter is valid only if the IIAPI_GI_LOB_LENGTH mask is set in gq_mask; otherwise, this parameter should be ignored.