-- Build the dynamic SQL query to truncate the current table SET@SqlQuery='TRUNCATE TABLE '+QUOTENAME(@TableName) -- Execute the dynamic SQL query EXECsp_executesql@SqlQuery FETCHNEXTFROMtableCursorINTO@TableName END CLOSEtableCursor DEALLOCATEtableCursor END 2|0执行 EXECClearAllTables 免责声明:仅技术技术分享,谨慎操作,数据...
1、先找出没有外键约束的表,truncate 2、有外键的表,先delete,再复位identity列 SET NoCount ON DECLARE @tableName varchar(512) Declare @SQL varchar(2048) SET @tableName=” WHILE NOT EXISTS ( –Find all child tables and those which have no relations SELECT T.table_name FROM INFORMATION_SCHEMA....
Stored Procedure 是一种存储在数据库中的一组 SQL 语句,可以像调用函数一样调用它们。通过创建一个 Stored Procedure,可以在其中执行多个 TRUNCATE TABLE 或 DELETE 语句,从而一次性清理多张表。 下面是一个使用 Stored Procedure 清理多张表的示例: DELIMITER//CREATEPROCEDUREclean_tables()BEGINDECLAREdoneINTDEFAULT...
You can't useTRUNCATE TABLEon tables that: Are referenced by aFOREIGN KEYconstraint. You can truncate a table that has a foreign key that references itself. Participate in an indexed view. Are published by using transactional replication or merge replication. ...
Truncating Large Tables 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. For more information, seeDropping and Rebuilding Large Objects. ...
U-SQL tables Introduction to tables CREATE TABLE ALTER TABLE ALTER TABLE - Adding and removing vertical partition buckets TRUNCATE TABLE DROP TABLE U-SQL indexes U-SQL statistics U-SQL views U-SQL functions U-SQL packages U-SQL procedures ...
TRUNCATE TABLE TheTRUNCATE TABLEcommand deletes the data inside a table, but not the table itself. The following SQL truncates the table "Categories": Example TRUNCATETABLECategories; ❮Previous❮ SQL KeywordsReferenceNext❯ Track your progress - it's free!
TRUNCATE TABLE 表名; #删除指定表, 并重新创建表。注意: 在删除表的时候,表中的全部数据也都会被删除。 2.2 DML DML英文全称是Data Manipulation Language(数据操作语言),用来对数据库中表的数据记录进 行增、删、改操作。 添加数据(INSERT) 修改数据(UPDATE) 删除数据(DELETE) 2.2.1 添加数据 给指定...
否则，插入的下一行将使用newReseedValue + 1。如果newReseedValue的值小于标识列中的最大值，则将在...
Difference between DROP and TRUNCATE Statement:If a table is dropped, all the relationships with other tables will no longer be valid, the integrity constraints will be dropped, grant or access privileges on the table will also be dropped, if you want use the table again it has to be ...