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function	SQLPrimaryKeys

Library: ODBC Include: omodbc.xin

Returns: Numeric An SQL return code. The following values may be returned: SQL_SUCCESS (the column names were retrieved). SQL_SUCCESS_WITH_INFO (the column names were retrieved, but a message was issued). SQL_ERROR (an error occurred). SQL_INVALID_HANDLE (the handle is invalid). SQL_STILL_EXECUTING (the program is still executing).

Declaration

  define external counter function SQLPrimaryKeys
     (  read-only SQL_handle_type StatementHandle,
        value stream CatalogName,
        value counter NameLength1,
        value stream SchemaName,
        value counter NameLength2,
        value stream TableName,
        value counter NameLength3 )

Returns the column names that comprise the primary key for a table. The driver returns the information as a result set. This function does not support the return of primary keys from multiple tables in a single call.

Input arguments:

• StatementHandle.
• CatalogName. If a driver supports catalogs for some tables but not others, such as when the driver retrieves data from different DBMSs, an empty string ("") denotes tables without catalogs. CatalogName cannot contain a string search pattern.
• NameLength1. The length of CatalogName.
• SchemaName. A string-search pattern for schema names. If a driver supports schemas for some tables but not others, such as when the driver retrieves data from different DBMSs, an empty string ("") denotes tables without schemas. SchemaName cannot contain a string-search pattern.
• NameLength2. The length of SchemaName.
• TableName. TableName cannot contain a string search pattern.
• NameLength3. The length of TableName.