--Disable Constraints & Triggers 1. EXEC sp_MSforeachtable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' 1. EXEC sp_MSforeachtable 'ALTER TABLE ? DISABLE TRIGGER ALL' 1. --Perform delete operation on all table for cle
|{ 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]} |SWITCH[PARTITION <source partitio...
在MySQL中，外键约束用于确保两个表之间的数据一致性。外键约束是一种限制，它将一个表中的列与另一个...
ALTER TABLE 语句的语法格式为: ALTERTABLEtable {[ALTER COLUMN column_name { new_data_type [ (precision[, scale]) ] [NULL | NOT NULL] |{ADD|DROP}ROWGUIDCOL } ] |ADD {[<column_definition>] |column_nameAScomputed_column_expression }[, n] |[WITH CHECK | WITH NOCHECK]ADD {<table_con...
AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatement AlterTableConstraintModificationStatement AlterTableDropTableElement AlterTableDropTableElementStatement Alt...
AlterTableAddTableElementStatement 类 AlterTableAlterColumnOption 枚举 AlterTableAlterColumnStatement 类 AlterTableChangeTrackingModificationStatement 类 AlterTableConstraintModificationStatement 类 AlterTableDropTableElement 类 AlterTableDropTableElementStatement 类 AlterTableRebuildStatement 类 AlterTableSetStatement 类...
AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatement AlterTableConstraintModificationStatement AlterTableDropTableElement AlterTableDropTableElementStatement AlterTableFileTableName...
ALTER TABLE HumanResources.EmployeeDepartmentHistory CHECK CONSTRAINT FK_EmployeeDepartmentHistory_Department_DepartmentID; GO 1. 2. 3. H. 重新生成分区索引 以下示例重新生成分区索引IX_TransactionHistory_TransactionDate的单个分区,分区编号为5。此示例假定安装了已分区索引示例。有关安装信息,请参阅Readme_Partiti...
AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatement AlterTableConstraintModificationStatement AlterTableDropTableElement AlterTableDropTableElementStatement AlterTableFileTableName...
DBCC ('table_name'，RESEED，newReseedValue)当前标识值设置为newReseedValue。如果表自创建以来没有插入...