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version 2004
ODBC_SQLDescribeParam (stmtID; paramNb; dataType; paramSize; decimalDigits; nullable) 
Longint
| Parameter | Type | Description | |
| stmtID | Longint | | Statement ID |
| paramNb | Longint | | Parameter marker number ordered sequentially |
| in increasing parameter order, starting at 1 | |||
| dataType | Longint |  | SQL data type of the parameter |
| paramSize | Longint | | Size of the column or expression of the corresponding |
| parameter marker as defined by the data source | |||
| decimalDigits | Longint | | Number of decimal digits of the column or expression |
| of the corresponding parameter as defined by the | |||
| data source |
| nullable | Longint | | Indicates whether the parameter allows NULL values |
| Function result | Longint | | Returns the result of the MS ODBC API function |
| SQLDescribeParam |
Description
The ODBC_SQLDescribeParam command returns the description of a parameter associated with a prepared SQL statement.
stmtID is a valid statement ID returned by ODBC_SQLAllocStmt.
paramNb is the parameter marker number ordered sequentially in increasing parameter order, starting at 1.
dataType is the SQL data type of the parameter. See the ODBC_SQLGetTypeInfo command for possible data types.
paramSize is the size of the column or expression.
decimalDigits is the number of decimal digits of the column or expression.
The nullable parameter indicates whether the parameter allows NULL values and can be equal to one of the following values:
| Constant | Description |
| SQL_NO_NULLS | Does not allow NULL values |
| SQL_NULLABLE | Allows NULL values |
| SQL_NULLABLE_UNKNOWN | Driver cannot determine if the parameter allows NULL values |
For more information, please see the SQLDescribeParam function in the MS ODBC API at http://msdn.microsoft.com/library/en-us/odbc/htm/odbcsqldescribeparam.asp.
Function Results
SQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_STILL_EXECUTING, SQL_ERROR, or SQL_INVALID_HANDLE.
See Also
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