SQL 判断表或字段是否存在

tPlayer 表名

sName 字段名

if object_id(N'tPlayer',N'U') is null
print '不存在'
else 
print '存在'

　　

IF NOT EXISTS(SELECT * FROM syscolumns WHERE [ID] = object_id(N'tPlayer') AND [NAME] = N'sName')
print '不存在'
else
print '存在'