Syntax for SQL Server, Azure SQL Database, Fabric SQL databasesyntaxsql კოპირება TRUNCATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } [ WITH ( PARTITIONS ( { <partition_number_expression> | <range> } [ , ...n ] ) )...
ExampleGet your own SQL Server DROP TABLE Shippers; SQL TRUNCATE TABLEThe TRUNCATE TABLE statement is used to delete the data inside a table, but not the table itself.SyntaxTRUNCATE TABLE table_name; Exercise? What does the SQL DROP TABLE statement do? Deletes a table and all its data ...
在SQL Server 2005 Enterprise Edition 中,根据 max degree of parallelism 配置选项和当前工作负荷,确定运行单个 ALTER TABLE ADD(基于索引)CONSTRAINT 或 DROP(聚集索引)CONSTRAINT 语句采用的处理器数。如果数据库引擎检测到系统正忙,则在语句执行开始之前将自动降低操作并行度。可以通过指定 MAXDOP 选项,手动配置用于...
Microsoft SQL Server has the ability to drop or truncate tables that have more than 128 extents without holding simultaneous locks on all the extents required for the drop.PermissionsThe minimum permission required is ALTER on table_name. TRUNCATE TABLE permissions default to the table owner, ...
The minimum permission required is ALTER on table_name. TRUNCATE TABLE permissions default to the table owner, members of the sysadmin fixed server role, and the db_owner and db_ddladmin fixed database roles, and are not transferable. However, you can incorporate the TRUNCATE TABLE statement wit...
DROP TABLE 表名 CASCADE CONSTRAINTS; 4.TRUNCATE (清空表里的所有记录, 保留表的结构) TRUNCATE 表名; 三.查询语句 (SELECT) 部分 SELECT字段名1, 字段名2, …… FROM 表名1, [表名2, ……] WHERE 条件; 字段名可以带入函数 例如: COUNT(*), MIN(字段名), MAX(字段名), AVG(字段名), DISTINCT...
Applies to: SQL Server ( SQL Server 2016 (13.x) throughcurrent version). The following example creates a table namedT1. Then the second statement drops the table. The third statement performs no action because the table is already dropped, however it doesn't cause an error. ...
The following SQL deletes the table "Shippers":ExampleGet your own SQL Server DROP TABLE Shippers; Note: Be careful before deleting a table. Deleting a table results in loss of all information stored in the table!TRUNCATE TABLEThe TRUNCATE TABLE command deletes the data inside a table, but ...
To delete all the rows in a table, useTRUNCATE TABLE.TRUNCATE TABLEis faster than DELETE and uses fewer system and transaction log resources.TRUNCATE TABLEhas restrictions, for example, the table cannot participate in replication. For more information, seeTRUNCATE TABLE (Transact-SQL) ...
You can do to a temporary table the same things you do with regular tables. You can SELECT, INSERT, UPDATE, DELETE, and TRUNCATE them. And you can also use INDEX and add constraints. And finally, you can use DROP to erase them. ...