MSSQL 判断表是否存在的两种方法

SQL学习之查询技巧　查询表是否存在的两种方法
方法一 判断系统对象是否存在

DECLARE
   @DbTableFileName VARCHAR(100)

SET @DbTableFileName = \'tx\'

IF objectproperty(object_id(@DbTableFileName),\'IsUserTable\') IS NOT NULL 
   PRINT \'EXISTS \'
ELSE
   PRINT \'NOT EXISTS \'

IF object_id(@DbTableFileName) IS NOT NULL 
   PRINT \'EXISTS \'
ELSE
   PRINT \'NOT EXISTS \'

IF EXISTS (SELECT Object_id(@DbTableFileName))
   PRINT \'EXISTS \'
ELSE
   PRINT \'NOT EXISTS \'


方法二 通过查询系统表

DECLARE
   @DbTableFileName VARCHAR(100)

SET @DbTableFileName = \'tx\'

IF EXISTS (SELECT 1
            FROM    sysobjects
            WHERE   name = @DbTableFileName
                   AND TYPE = \'u\')
   PRINT \'EXISTS \'
ELSE
   PRINT \'NOT EXISTS \'

方法一更安全,