Declaretbl_curcursorforselectTABLE_NAMEfromINFORMATION_SCHEMA.TABLESWHERETABLE_TYPE='BASE TABLE' OPENtbl_curFETCHNEXTfromtbl_curINTO@t WHILE@@FETCH_STATUS=0 BEGIN SET@SQL='TRUNCATE TABLE'+@t --print (@SQL) EXEC(@SQL) FETCHNEXTfromtbl_curINTO@t END CLOSEtbl_cur DEALLOCATEtbl_Cur select*from...
之前写了篇关于:SQL Server 游标运用:查看一个数据库所有表大小信息(Sizes of All Tables in a Database)的文章,它罗列出某个数据所有表的信息,这些信息包括:表的记录数、数据记录占用空间、索引占用空间、没使用的空间等(如Figure1所示),现在我来讲述如何获取整个数据库实例中所有数据库所有表的信息(如Figure2所...
The DROP TABLE command deletes a table in the database.The following SQL deletes the table "Shippers":Example DROP TABLE Shippers; Try it Yourself » Note: Be careful before deleting a table. Deleting a table results in loss of all information stored in the table!
TRUNCATE 陳述式會導致啟動 DELETE 觸發程式。然而,陳述式指定 RESTRICT WHEN DELETE TRIGGERS(隱含或明示)。當要截斷的表格有 DELETE 觸發程式存在,且 TRUNCATE 陳述式的結果會啟動觸發程式時,便可能發生這種情況。 要截斷的表格是參照限制中的母表格。 無法處理該陳述式。 使用者回應 如果陳述式由於 DELETE 觸發程式...
SQL database in Microsoft Fabric Removes all rows from a table or specified partitions of a table, without logging the individual row deletions.TRUNCATE TABLEis similar to theDELETEstatement with noWHEREclause; however,TRUNCATE TABLEis faster and uses fewer system and transaction log resources. ...
TRUNCATE statement: This command is used to delete all the rows from the table and free the space containing the table.SQL DROP Statement:The SQL DROP command is used to remove an object from the database. If you drop a table, all the rows in the table is deleted and the table ...
TRUNCATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } [ ; ] Argumentsdatabase_nameThe name of the database.schema_nameThe name of the schema to which the table belongs.table_nameThe name of the table to truncate or from which all rows are remov...
SQL database in Microsoft Fabric Removes all rows from a table or specified partitions of a table, without logging the individual row deletions.TRUNCATE TABLEis similar to theDELETEstatement with noWHEREclause; however,TRUNCATE TABLEis faster and uses fewer system and transaction log resources. ...
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. ...
3、再次查看一下结果。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 mysql>show tables;+---+|Tables_in_cainiao|+---+|test1||test2|+---+2rowsinset(0.00sec)