关于数据库应用的小积累

1、查询死锁 
    EXEC sp_lock   // SELECT TOP 1 * FROM sysobjects WHERE id=1141579105
2、干掉死锁
    kill  id
3、查询整个数据库中某个字段值在哪个表的哪个字段中存在
    CREATE PROCEDURE [dbo].[SP_FindValueInDB]
(
    @value VARCHAR(1024)
)       
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @sql VARCHAR(1024)
DECLARE @table VARCHAR(64)
DECLARE @column VARCHAR(64)

CREATE TABLE #t (
    tablename VARCHAR(64),
    columnname VARCHAR(64)
)

DECLARE TABLES CURSOR
FOR

    SELECT o.name, c.name
    FROM syscolumns c
    INNER JOIN sysobjects o ON c.id = o.id
    WHERE o.type = 'U' AND c.xtype IN (167, 175, 231, 239)
    ORDER BY o.name, c.name

OPEN TABLES

FETCH NEXT FROM TABLES
INTO @table, @column

WHILE @@FETCH_STATUS = 0
BEGIN
    SET @sql = 'IF EXISTS(SELECT NULL FROM [' + @table + '] '
    SET @sql = @sql + 'WHERE RTRIM(LTRIM([' + @column + '])) LIKE ''%' + @value + '%'') '
    SET @sql = @sql + 'INSERT INTO #t VALUES (''' + @table + ''', '''
    SET @sql = @sql + @column + ''')'

    EXEC(@sql)

    FETCH NEXT FROM TABLES
    INTO @table, @column
END

CLOSE TABLES
DEALLOCATE TABLES

SELECT *
FROM #t

DROP TABLE #t

End

EXEC [SP_FindValueInDB] ID

4、查询数据库中的触发器，存储过程、视图、表等
   SqlServer用法:
select name from sysobjects where xtype='TR' --所有触发器
select name from sysobjects where xtype='P' --所有存储过程
select name from sysobjects where xtype='V' --所有视图
select name from sysobjects where xtype='U' --所有表
   Oracle用法:
Select object_name From user_objects Where object_type='TRIGGER';  --所有触发器
Select object_name From user_objects Where object_type='PROCEDURE';  --所有存储过程
Select object_name From user_objects Where object_type='VIEW';  --所有视图
Select object_name From user_objects Where object_type='TABLE'; --所有表

5、查询数据库中所有触发器的名字以及createTriggerSql
  select
  tri.name  AS  TriggerName,
  tri.is_disabled AS IsDisable,
  tri.is_instead_of_trigger AS IsInsteadOfTrigger,
  c.text AS CreateTriggerSQL
from
  sys.triggers tri LEFT OUTER JOIN
     dbo.syscomments c ON tri.object_id = c.id