Firebird 2.1 Language Reference Update

Firebird 2.1 Language Ref. Update
FIRST and SKIP .................................................................................................................... 72
GROUP BY ........................................................................................................................... 74
HAVING: Stricter rules ......................................................................................................... 75
JOIN .................................................................................................................................... 75
ORDER BY ........................................................................................................................... 77
PLAN ................................................................................................................................... 80
Relation alias makes real name unavailable ........................................................................... 81
ROWS .................................................................................................................................. 81
UNION ................................................................................................................................. 82
WITH LOCK ......................................................................................................................... 83
UPDATE ....................................................................................................................................... 84
COLLATE subclause for text BLOB columns .......................................................................... 85
ORDER BY ........................................................................................................................... 85
PLAN ................................................................................................................................... 85
Relation alias makes real name unavailable ........................................................................... 85
RETURNING ......................................................................................................................... 86
ROWS .................................................................................................................................. 86
UPDATE OR INSERT .................................................................................................................... 87
7. Transaction control statements .......................................................................................................... 89
RELEASE SAVEPOINT .................................................................................................................. 89
ROLLBACK .................................................................................................................................. 89
ROLLBACK RETAIN ............................................................................................................. 89
ROLLBACK TO SAVEPOINT ................................................................................................. 90
SAVEPOINT ................................................................................................................................. 90
Internal savepoints ................................................................................................................ 91
Savepoints and PSQL ........................................................................................................... 92
SET TRANSACTION ..................................................................................................................... 92
IGNORE LIMBO ................................................................................................................... 93
LOCK TIMEOUT ................................................................................................................... 93
NO AUTO UNDO .................................................................................................................. 93
8. PSQL statements .............................................................................................................................. 95
BEGIN ... END blocks may be empty ............................................................................................. 95
BREAK ........................................................................................................................................ 95
CLOSE cursor ............................................................................................................................... 96
DECLARE .................................................................................................................................... 96
DECLARE ... CURSOR .......................................................................................................... 97
DECLARE [VARIABLE] with initialization ............................................................................. 98
DECLARE with DOMAIN instead of datatype ......................................................................... 98
COLLATE in variable declaration .......................................................................................... 99
NOT NULL in variable declaration ......................................................................................... 99
EXCEPTION ............................................................................................................................... 100
Rethrowing a caught exception ........................................................................................... 100
Providing a custom error message ....................................................................................... 100
EXECUTE PROCEDURE .............................................................................................................. 101
EXECUTE STATEMENT .............................................................................................................. 101
No data returned ................................................................................................................ 101
One row of data returned .................................................................................................... 102
Any number of data rows returned ...................................................................................... 102
Caveats with EXECUTE STATEMENT .................................................................................. 103
EXIT .......................................................................................................................................... 103
FETCH cursor ............................................................................................................................. 103
FOR EXECUTE STATEMENT ... DO ............................................................................................. 104
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