SQL中的一些批量操作技巧

--禁用：
ALTER TABLE trig_example DISABLE TRIGGER trig1

--恢复：
ALTER TABLE trig_example ENABLE TRIGGER trig1

--禁用某个表上的所有触发器
ALTER TABLE 你的表 DISABLE TRIGGER all

--启用某个表上的所有触发器
ALTER TABLE 你的表 enable TRIGGER all

--禁用所有表上的所有触发器
exec sp_msforeachtable 'ALTER TABLE ? DISABLE TRIGGER all'

--启用所有表上的所有触发器
exec sp_msforeachtable 'ALTER TABLE ? enable TRIGGER all'

--禁用所有约束
exec sp_msforeachtable ’alter table ? nocheck CONSTRAINT all’
--再启用所有外键约束
exec sp_msforeachtable ’alter table ? check constraint all’

--获得禁用所有外键约束的语句
select  'ALTER TABLE ['  + b.name +  '] NOCHECK CONSTRAINT ' +  a.name +';' as  禁用约束   
from  sysobjects  a ,sysobjects  b     
where  a.xtype ='f' and  a.parent_obj = b.id

--获得启用所有外键约束的语句
select  'ALTER TABLE [' + b.name +  '] CHECK CONSTRAINT ' +  a.name +';' as  启用约束     
from  sysobjects  a ,sysobjects  b     
where  a.xtype ='f' and  a.parent_obj = b.id

--禁止触发器和约束
 exec sp_msforeachtable 'alter table ? nocheck CONSTRAINT all'
 exec sp_msforeachtable 'ALTER TABLE ? DISABLE TRIGGER all'
 
 SET NoCount ON
   DECLARE @tableName varchar(512)
   Declare @SQL varchar(2048)
   SET @tableName=''
   WHILE NOT EXISTS
   (   
   --Find all child tables and those which have no relations
   SELECT T.table_name   FROM INFORMATION_SCHEMA.TABLES T
          LEFT OUTER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC    ON T.table_name = TC.table_name
     WHERE ( TC.constraint_Type = 'Foreign Key' OR TC.constraint_Type IS NULL )
         AND T.table_name NOT IN (  'dtproperties ',  'sysconstraints ',  'syssegments ' )
         AND Table_type =  'BASE TABLE '
         AND T.table_name > @TableName
         )
    Begin
        SELECT @tableName = min(T.table_name)    FROM INFORMATION_SCHEMA.TABLES T
        LEFT OUTER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC    ON T.table_name=TC.table_name
           WHERE ( TC.constraint_Type =  'Foreign Key ' OR TC.constraint_Type IS NULL )
         AND T.table_name NOT IN (  'dtproperties ',  'sysconstraints ',  'syssegments ' )
         AND Table_type =  'BASE TABLE '
         AND T.table_name > @TableName
        -- Truncate the table
         SET @SQL =  'Truncate table  '+ @TableName 
         print (@SQL)
         Exec(@SQL)
     End
  
   SET @TableName=''
   WHILE EXISTS
   ( 
   --Find all Parent tables
     SELECT T.table_name     FROM INFORMATION_SCHEMA.TABLES T
     LEFT OUTER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC     ON T.table_name = TC.table_name
     WHERE TC.constraint_Type =  'Primary Key '
     AND T.table_name <>  'dtproperties '
     AND Table_type= 'BASE TABLE '
     AND T.table_name > @TableName
     )
   Begin
     SELECT @tableName = min(T.table_name)   FROM INFORMATION_SCHEMA.TABLES T
          LEFT OUTER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC   ON T.table_name=TC.table_name
     WHERE TC.constraint_Type =  'Primary Key '
     AND T.table_name <>  'dtproperties '
     AND Table_type =  'BASE TABLE '
     AND T.table_name > @TableName
  --   Delete the table
    
        SET @SQL =  ' delete from  '+ @TableName 
         print (@SQL)
         Exec(@SQL)
     --Reset identity column
         IF EXISTS ( SELECT *   FROM INFORMATION_SCHEMA.COLUMNS
             WHERE COLUMNPROPERTY(
             OBJECT_ID( QUOTENAME(table_schema)+  '.' + QUOTENAME(@tableName) ),
             column_name, 'IsIdentity '
             ) = 1
           )

     DBCC CHECKIDENT(@tableName,RESEED,0)
   End
   SET NoCount OFF
 --启用触发器和约束 
exec sp_msforeachtable 'alter table ? check constraint all'

exec sp_msforeachtable 'ALTER TABLE ? enable TRIGGER all'