MySQL+deleteSingleTable()+getAllTableNames()+deleteAllTables()SQL+deleteSingleTable()Table+nameResult+tables[] 附录:饼状图 下面是一个示例饼状图,展示了数据库中各个表所占的比例
1. Delete all tables DECLARE @tablename varchar(50) DECLARE @truncatesql varchar(255) DECLARE TrCun_Cursor CURSOR FOR select [name] from sysobjects where type = 'U' -- or select [name] from sysobjects where type = 'U' and name 'table_you_do_NOT_want_to_delete' OPEN TrCun_Cursor FE...
EN1、点击[testdb] 2、点击[表] 3、点击[新建] 4、点击[表] 5、点击[列名] 6、点击[...
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.TABLES T LEFT OUTER JOIN INFORMATION_...
TRUNCATE TABLE 语句会删除表中的所有行,但不会记录每一行的删除操作,因此通常比 DELETE 语句更快。这是一个DDL(数据定义语言)操作,不能回滚。 sql TRUNCATE TABLE table_name; 注意:如果表有外键约束,TRUNCATE TABLE 可能会失败。 使用DELETE 语句: DELETE 语句会逐行删除表中的所有数据,并记录每一行的删除操作...
DELETEFROMtable1FROMtable1,table2/* join of 2 tables */ 如果两个表引用具有相同的别名,则两者引用同一个表: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 DELETEFROMtable1ASxFROMtable1ASx,table2/* join of 2 tables */ 如果两个表引用都有别名,并且别名不同,则 IRIS将执行表的两个实例的联...
Partitioned TablesDELETEsupports explicit partition selection using the PARTITIONoption, which takes a listofthe comma-separated namesofoneormore partitionsorsubpartitions (orboth)fromwhichtoselectrowstobe dropped. Partitionsnotincludedinthe list are ignored. Given a ...
CREATE PROCEDURE DeleteAllData AS BEGIN DECLARE @SQL nvarchar(2000), @CurrentTablesysname, @CurrentSchema sysname --Grab the server version for anystatements which need to be modified based upon the server version DECLARE @ServerVersion int SET @ServerVersion = (SELECTCAST(LEFT(CAST(SERVERPROPERTY...
Delete comma from table column data Delete data from all tables in a schema Delete data in Excel using Openrowset? Delete from Where Exists DELETE From with sub query delete large number of rows without growing the transaction log Delete Query is Performing too slow with around 6 million record...
SQL20356N 無法截斷表格 table-name,原因是表格有 DELETE 觸發程式存在,或表格在參照限制中是母項。 解說 無法處理 TRUNCATE 陳述式,原因為下列其中一項: 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 ...