Exécutez la section commentée une fois, remplissez la table _TruncateList avec les tables que vous souhaitez tronquer, puis exécutez le reste du script. La table _ScriptLog devra être nettoyée au fil du temps si vous le faites souvent.
Vous pouvez le modifier si vous voulez faire toutes les tables, il suffit de mettre le nom SELECT INTO #TruncateList FROM sys.tables. Cependant, vous ne voulez généralement pas tout faire.
En outre, cela affectera toutes les clés étrangères de la base de données, et vous pouvez également le modifier s'il est trop contraignant pour votre application. Ce n'est pas pour moi.
/*
CREATE TABLE _ScriptLog
(
ID Int NOT NULL Identity(1,1)
, DateAdded DateTime2 NOT NULL DEFAULT GetDate()
, Script NVarChar(4000) NOT NULL
)
CREATE UNIQUE CLUSTERED INDEX IX_ScriptLog_DateAdded_ID_U_C ON _ScriptLog
(
DateAdded
, ID
)
CREATE TABLE _TruncateList
(
TableName SysName PRIMARY KEY
)
*/
IF OBJECT_ID('TempDB..#DropFK') IS NOT NULL BEGIN
DROP TABLE #DropFK
END
IF OBJECT_ID('TempDB..#TruncateList') IS NOT NULL BEGIN
DROP TABLE #TruncateList
END
IF OBJECT_ID('TempDB..#CreateFK') IS NOT NULL BEGIN
DROP TABLE #CreateFK
END
SELECT Scripts = 'ALTER TABLE ' + '[' + OBJECT_NAME(f.parent_object_id)+ ']'+
' DROP CONSTRAINT ' + '[' + f.name + ']'
INTO #DropFK
FROM .sys.foreign_keys AS f
INNER JOIN .sys.foreign_key_columns AS fc
ON f.OBJECT_ID = fc.constraint_object_id
SELECT TableName
INTO #TruncateList
FROM _TruncateList
SELECT Scripts = 'ALTER TABLE ' + const.parent_obj + '
ADD CONSTRAINT ' + const.const_name + ' FOREIGN KEY (
' + const.parent_col_csv + '
) REFERENCES ' + const.ref_obj + '(' + const.ref_col_csv + ')
'
INTO #CreateFK
FROM (
SELECT QUOTENAME(fk.NAME) AS [const_name]
,QUOTENAME(schParent.NAME) + '.' + QUOTENAME(OBJECT_name(fkc.parent_object_id)) AS [parent_obj]
,STUFF((
SELECT ',' + QUOTENAME(COL_NAME(fcP.parent_object_id, fcp.parent_column_id))
FROM sys.foreign_key_columns AS fcP
WHERE fcp.constraint_object_id = fk.object_id
FOR XML path('')
), 1, 1, '') AS [parent_col_csv]
,QUOTENAME(schRef.NAME) + '.' + QUOTENAME(OBJECT_NAME(fkc.referenced_object_id)) AS [ref_obj]
,STUFF((
SELECT ',' + QUOTENAME(COL_NAME(fcR.referenced_object_id, fcR.referenced_column_id))
FROM sys.foreign_key_columns AS fcR
WHERE fcR.constraint_object_id = fk.object_id
FOR XML path('')
), 1, 1, '') AS [ref_col_csv]
FROM sys.foreign_key_columns AS fkc
INNER JOIN sys.foreign_keys AS fk ON fk.object_id = fkc.constraint_object_id
INNER JOIN sys.objects AS oParent ON oParent.object_id = fkc.parent_object_id
INNER JOIN sys.schemas AS schParent ON schParent.schema_id = oParent.schema_id
INNER JOIN sys.objects AS oRef ON oRef.object_id = fkc.referenced_object_id
INNER JOIN sys.schemas AS schRef ON schRef.schema_id = oRef.schema_id
GROUP BY fkc.parent_object_id
,fkc.referenced_object_id
,fk.NAME
,fk.object_id
,schParent.NAME
,schRef.NAME
) AS const
ORDER BY const.const_name
INSERT INTO _ScriptLog (Script)
SELECT Scripts
FROM #CreateFK
DECLARE @Cmd NVarChar(4000)
, @TableName SysName
WHILE 0 < (SELECT Count(1) FROM #DropFK) BEGIN
SELECT TOP 1 @Cmd = Scripts
FROM #DropFK
EXEC (@Cmd)
DELETE #DropFK WHERE Scripts = @Cmd
END
WHILE 0 < (SELECT Count(1) FROM #TruncateList) BEGIN
SELECT TOP 1 @Cmd = N'TRUNCATE TABLE ' + TableName
, @TableName = TableName
FROM #TruncateList
EXEC (@Cmd)
DELETE #TruncateList WHERE TableName = @TableName
END
WHILE 0 < (SELECT Count(1) FROM #CreateFK) BEGIN
SELECT TOP 1 @Cmd = Scripts
FROM #CreateFK
EXEC (@Cmd)
DELETE #CreateFK WHERE Scripts = @Cmd
END
