SQLTablePrivileges

Purpose

SQLTablePrivileges() returns a list of tables and associated privileges for each table. The information is returned in an SQL result set, which can be retrieved using the same functions that are used to process a result set generated by a query.

Syntax

SQLRETURN SQLTablePrivileges  (SQLHSTMT         StatementHandle,
                               SQLCHAR          *CatalogName,
                               SQLSMALLINT      NameLength1,
                               SQLCHAR          *SchemaName,
                               SQLSMALLINT      NameLength2,
                               SQLCHAR          *TableName,
                               SQLSMALLINT      NameLength3);

Function arguments

Table 1. SQLTablePrivileges arguments
Data type	Argument	Use	Description
SQLCHAR *	SchemaName	Input	Buffer that might contain a pattern-value to qualify the result set by schema name.
SQLCHAR *	szTableQualifier	Input	Catalog qualifier of a 3 part table name. This must be a null pointer or a zero length string.
SQLCHAR *	TableName	Input	Buffer that might contain a pattern-value to qualify the result set by table name.
SQLHSTMT	StatementHandle	Input	Statement handle.
SQLSMALLINT	cbTableQualifier	Input	Length of CatalogName. This must be set to 0.
SQLSMALLINT	NameLength2	Input	Length of SchemaName.
SQLSMALLINT	NameLength3	Input	Length of TableName.

Usage

The results are returned as a standard result set containing the columns listed in the following table. The result set is ordered by TABLE_CAT, TABLE_SCHEM, TABLE_NAME, and PRIVILEGE. If multiple privileges are associated with any given table, each privilege is returned as a separate row.

The granularity of each privilege reported here might or might not apply at the column level; for example, for some data sources, if a table can be updated, every column in that table can also be updated. For other data sources, the application must call SQLColumnPrivileges() to discover if the individual columns have the same table privileges.

Because calls to SQLColumnPrivileges() in many cases map to a complex and thus expensive query against the system catalog, they should be used sparingly, and the results saved rather than repeating calls.

The VARCHAR columns of the catalog functions result set have been declared with a maximum length attribute of 128 to be consistent with SQL92 limits. Because DB2^® names are less than 128, the application can choose to always set aside 128 characters (plus the null-terminator) for the output buffer, or alternatively, call SQLGetInfo() with SQL_MAX_CATALOG_NAME_LEN, SQL_MAX_SCHEMA_NAME_LEN, SQL_MAX_TABLE_NAME_LEN, and SQL_MAX_COLUMN_NAME_LEN. The SQL_MAX_CATALOG_NAME_LEN value determines the actual length of the TABLE_CAT supported by the connected DBMS. The SQL_MAX_SCHEMA_NAME_LEN value determines the actual length of the TABLE_SCHEM supported by the connected Database Management System (DBMS). The SQL_MAX_TABLE_NAME_LEN value determines the actual length of the TABLE_NAME supported by the connected DBMS. The SQL_MAX_COLUMN_NAME_LEN value determines the actual length of the COLUMN_NAME supported by the connected DBMS.

Although new columns can be added and the names of the existing columns changed in future releases, the position of the current columns does not change.

Table 2. Columns returned by SQLTablePrivileges
Column name	Data type	Description
GRANTEE	VARCHAR(128)	Authorization ID of the user to whom the privilege is granted.
GRANTOR	VARCHAR(128)	Authorization ID of the user who granted the privilege.
IS_GRANTABLE	VARCHAR(3)	Indicates whether the grantee is permitted to grant the privilege to other users. This can be "YES", "NO" or "NULL".
PRIVILEGE	VARCHAR(128)	The table privilege. This can be one of the following strings: ALTER CONTROL INDEX DELETE INSERT REFERENCES SELECT UPDATE
TABLE_CAT	VARCHAR(128)	This is always null.
TABLE_NAME	VARCHAR(128) not NULL	The name of the table.
TABLE_SCHEM	VARCHAR(128)	The name of the schema containing TABLE_NAME.

Note: The column names used by DB2 CLI follow the X/Open CLI CAE specification style. The column types, contents and order are identical to those defined for the SQLProcedures() result set in ODBC.

Return codes

SQL_SUCCESS
SQL_SUCCESS_WITH_INFO
SQL_STILL_EXECUTING
SQL_ERROR
SQL_INVALID_HANDLE

Diagnostics

Table 3. SQLTablePrivileges SQLSTATEs
SQLSTATE	Description	Explanation
HY001	Memory allocation failure	The driver is unable to allocate memory required to support the processing or completion of the function.
HY009	String or buffer length that is not valid	The value of one of the name length arguments is less than 0, but not equal SQL_NTS.
HY010	Function sequence error	There is an open cursor for this statement handle, or there is no connection for this statement handle.
HY021	Internal descriptor that is not valid	The internal descriptor cannot be addressed or allocated, or it contains a value that is not valid.

Restrictions

None.

Example

/* From the CLI sample TBINFO.C */
/* ... */

    /* call SQLTablePrivileges */ 
    printf("\n    Call SQLTablePrivileges for:\n"); 
    printf("        tbSchemaPattern = %s\n", tbSchemaPattern); 
    printf("        tbNamePattern = %s\n", tbNamePattern); 
    sqlrc = SQLTablePrivileges( hstmt, NULL, 0, 
                                tbSchemaPattern, SQL_NTS, 
                                tbNamePattern, SQL_NTS); 
    STMT_HANDLE_CHECK( hstmt, sqlrc);

SQLTablePrivileges – Get privileges associated with a table