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| SET TERM §;
/******************************************************************************
*** DESTRUCTIONS DE TOUS LES TRIGGERS, PROCEDURES, TABLES ET INDEX INUTILES ***
******************************************************************************/
CREATE PROCEDURE DROP_FOR_GEN_DAT
AS
DECLARE VARIABLE TableName VarChar(32);
DECLARE VARIABLE ConstraintName VarChar(32);
DECLARE VARIABLE IndexName VarChar(31);
DECLARE VARIABLE IsLoop Integer;
DECLARE VARIABLE CountLoop Integer;
BEGIN
/********************************************************************
*** Passe à la trappe tous les "foreign key" ***
********************************************************************/
FOR
SELECT
RDB$Relation_Name, RDB$Constraint_Name
FROM RDB$Relation_Constraints
WHERE RDB$Constraint_Type = 'FOREIGN KEY'
INTO :TableName, :ConstraintName DO
BEGIN
EXECUTE STATEMENT 'ALTER TABLE ' || TableName || ' DROP CONSTRAINT ' || ConstraintName;
END
/********************************************************************
*** Passe à la trappe tous les "CHECK" ***
********************************************************************/
FOR
SELECT
RDB$Relation_Name, RDB$Constraint_Name
FROM RDB$Relation_Constraints
WHERE RDB$Constraint_Type = 'CHECK'
INTO :TableName, :ConstraintName DO
BEGIN
EXECUTE STATEMENT 'ALTER TABLE ' || TableName || ' DROP CONSTRAINT ' || ConstraintName;
END
/********************************************************************
*** Passe à la trappe tous les "TRIGGERS" ***
********************************************************************/
FOR
SELECT
RDB$Trigger_Name
FROM RDB$Triggers
WHERE RDB$Flags = 1
INTO :ConstraintName DO
BEGIN
EXECUTE STATEMENT 'DROP TRIGGER ' || ConstraintName;
END
/********************************************************************
*** Passe à la trappe toutes les "PROCEDURES" ***
********************************************************************/
/* Le problème est de régler les interdépendances!
Pour cela, la boucle est appelée sans cesse jusqu'au
moment ou plus aucune procédure n'est détruite!
*/
IsLoop = 1;
CountLoop = 25;
WHILE( ( IsLoop = 1 ) AND ( CountLoop > 0 ) ) DO
BEGIN
IsLoop = 0;
FOR
SELECT
RDB$Procedure_Name
FROM RDB$PROCEDURES
WHERE RDB$Procedure_Name != 'DROP_FOR_GEN_DAT'
INTO :ConstraintName DO
BEGIN
EXECUTE STATEMENT 'DROP PROCEDURE ' || ConstraintName;
IsLoop = 1;
WHEN ANY DO
IsLoop = 1;
END
CountLoop = CountLoop - 1;
END
/********************************************************************
*** Passe à la trappe toutes les "TABLES" ***
********************************************************************/
FOR
SELECT
RDB$Relation_Name
FROM RDB$RELATIONS
WHERE ( ( RDB$SYSTEM_FLAG = 0 ) OR ( RDB$SYSTEM_FLAG IS NULL ) )
AND NOT ( RDB$Relation_Name IN
( 'DISQUES', 'GENRE', 'ARTISTE', 'TRACKLIST',
'CRITIQUES', 'INTERDITS', 'STOCK', 'PRIX',
'DISTRI', 'TYPSUPPORT'
)
)
INTO :TableName DO
BEGIN
EXECUTE STATEMENT 'DROP TABLE ' || TableName;
END
/********************************************************************
*** Passe à la trappe tous les index de DISQUES ***
********************************************************************/
FOR
SELECT RDB$INDEX_NAME FROM RDB$INDICES
WHERE RDB$RELATION_NAME = 'DISQUES'
AND NOT ( RDB$INDEX_NAME IN
( 'ID_UNIQUE' ,
'DISQUES_AUTEUR' , 'DISQUES_REGROUPEMENT',
'DISQUES_ORIGINE' , 'DISQUES_CODEPRIX' ,
'DISQUES_TITRE' , 'DISQUES_CODEFORMAT' ,
'DISQUES_ISEXPORT', 'DISQUES_DISTRIBUTEUR'
)
)
INTO :IndexName DO
BEGIN
EXECUTE STATEMENT 'DROP INDEX ' || IndexName;
WHEN ANY DO
IsLoop = 1; --juste pour la place
END
END
§
EXECUTE PROCEDURE DROP_FOR_GEN_DAT§
COMMIT§
DROP PROCEDURE DROP_FOR_GEN_DAT§
COMMIT§ |
