|[WITH CHECK | WITH NOCHECK]ADD {}[, n] |DROP {[CONSTRAINT]constraint_name |COLUMNcolumn }[, n] |{CHECK|NOCHECK}CONSTRAINT {ALL|constraint_name[, n]} |{ENABLE|DISABLE}TRIGGER {ALL|trigger_name[, n]} } 在建立一个表后,在使用过程中经常会发现原来创建的表可能存在结构、约束等方面的问题。
|[WITH CHECK|WITH NOCHECK] |{ ENABLE|DISABLE }TRIGGER{ALL|<触发器名>[, n]} |DROP--【删除列或约束】 {[CONSTRAINT]<约束名>--删除某个约束 |COLUMN<column_name>}[, n]--删除某列 |{CHECK|NOCHECK}CONSTRAINT{ALL|<约束名>[, n]} |{ENABLE|DISABLE}TRIGGER{ALL|<trigger_name>[, n]} |SW...
DISABLE TRIGGER ALL' 1. --Perform delete operation on all table for cleanup 1. EXEC sp_MSforeachtable 'DELETE ?' 1. --Enable Constraints & Triggers again 1. EXEC sp_MSforeachtable 'ALTER TABLE ? CHECK CONSTRAINT ALL' 1. EXEC sp_MSforeachtable 'ALTER TABLE ? ENABLE TRIGGER ALL' ...
{ CHECK | NOCHECK } ] { CHECK | NOCHECK } CONSTRAINT --启用或禁用约束 { ALL | constraint_name [ ,...n ] } | { ENABLE | DISABLE } TRIGGER --启用或禁用触发器 { ALL | trigger_name [ ,...n ] } | SWITCH [ PARTITION source_partition_number_expression ] --切换数据块 TO [ ...
使用T-SQL进行数据定义 一、数据库定义 •（一）T-SQL语句创建数据库的语法格式 •CREATEDATABASE数据库名 //设置数据库的名称 •[ON //定义数据库的数据文件 •[PRIMARY]//设置主文件组 •<数据文件描述符>[,…n]//设置数据文件的属性 •[,FILEGROUP文件组名 •<数据文件描述符>[,…n]]件...
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[NOT FOR REPLICATION]|DEFAULT<constant_expression>[FOR <column_name>]|CHECK[NOT FOR REPLICATOPM](<search_conditions>)[,...n][,...n]|[WITH CHECK|WHTH NOCHECK]|{ENABLE|DISABLE }TRIGGER{ALL|<triggername>[,...n]}|DROP{[CONSTRAINT]<constraint_name>|COLUMN<column_name>}[,...n]|{CHECK...
In these cases, you can disable the automatic update of the catalog and update it manually, or on a schedule, to keep the catalog up to date with the underlying tables. Note You can monitor the status of the full-text catalog by using the FULLTEXTCA...
+ 1。如果newReseedValue的值小于标识列中的最大值，则将在随后对表的引用中生成错误消息2627。
SELECT GET_BIT(@@OPTIONS, 0) /* 1 */ AS [DISABLE_DEF_CNST_CHK] -- Controls interim or deferred constraint checking. , GET_BIT(@@OPTIONS, 1) /* 2 */ AS [IMPLICIT_TRANSACTIONS] -- For dblib network library connections, controls whether a transaction is started implicitly when a statem...