Query below lists tables and their primary key (PK) constraint names. By browsing list you can spot which tables have and which don't have primary keys.

See also: tables without primary keys.

Query

SELECT  t.DatabaseName,
        t.TableName,
        i.IndexName,
        TRIM(TRAILING ',' 
            FROM XMLAGG(i.columnName || ',' 
                 ORDER BY i.columnPosition)(varchar(100))) AS KeyColumns
FROM    DBC.TablesV t
LEFT JOIN   DBC.IndicesV i
ON  t.DataBaseName = i.DataBaseName
AND t.TableName = i.TableName
AND i.IndexType = 'K'
WHERE   t.TableKind = 'T'
AND t.DataBaseName NOT IN ('All', 'Crashdumps', 'DBC', 'dbcmngr', 
    'Default', 'External_AP', 'EXTUSER', 'LockLogShredder', 'PUBLIC',
    'Sys_Calendar', 'SysAdmin', 'SYSBAR', 'SYSJDBC', 'SYSLIB', 
    'SystemFe', 'SYSUDTLIB', 'SYSUIF', 'TD_SERVER_DB', 'TDStats',
    'TD_SYSGPL', 'TD_SYSXML', 'TDMaps', 'TDPUSER', 'TDQCD',
    'tdwm', 'SQLJ', 'TD_SYSFNLIB', 'SYSSPATIAL')
GROUP BY t.DatabaseName,
         t.TableName,
         i.IndexName
ORDER BY t.DatabaseName,
         t.TableName;

Columns

• DatabaseName - database name
• TableName - table name
• IndexName - primary key index name
• KeyColumns - list of PK columns separated with ','

Rows

• One row represents one table in a database
• Scope of rows: all tables in a database
• Ordered by schema name, table name

Sample results

You can see what are the names of PK constraints for each table and which tables don't have PKs at all.

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