可以使用用户u1创建存储过程, create procedure u1.stgtruncate(table_name in varchar2) as begin execute immediate 'truncate table '||table_name; end; 然后将该存储过程的权限赋予u2, grant execute on u1.stgtruncate to u2; 现在登录u2,通过执行如下sql即可truncate u1下的表test1a call u1.stgtruncate('...
This Oracle tutorial explains how to use the Oracle TRUNCATE TABLE statement with syntax, examples, and practice exercises.Description The TRUNCATE TABLE statement is used to remove all records from a table in Oracle. It performs the same function as a DELETE statement without a WHERE clause. ...
This SQL tutorial explains how to use the SQL TRUNCATE TABLE statement with syntax, and examples. The SQL TRUNCATE statement is a used to remove all records from a table.
Further, we’ll explore the practical usage of the TRUNCATE TABLE statement in SQL and delete thePersonstable data from theAdventureWorks2019database. First, let’s see how many rows the table contains. To do this, we’ll execute the SELECT query with the COUNT(*) function that returns the...
【PL/SQL】三种删除方式 Delete,Truncate,Drop 看完这章你会学习到以下内容: 它们的共同点 它们的不同点 相同点: 它们都可以删除数据,清理那些无关紧要,与业务无关的数据。 不同点: 1.语句方面 delete语句是dml,这个操作会放到rollback segement中,事务提交之后才生效;如果有相应的trigger,执行的时候将被触发....
Pl/SQL Truncate Table You should consider about using Truncate table statement in your Pl/SQL code. Truncate table have better performance but you cannot rollback data after truncate. Truncate table can be executed in combination with EXECUTE IMMEDIATE command in Pl/SQL code....
SQL>@/home/oracle/FY_Recover_Data.pck -- 删除“&”符号后导入成功 Packagecreated. Packagebody created. STEP3:开始执行恢复,只需要两个参数:schema和table_name, [oracle@source-node~]$ sqlplus / as sysdbaSQL*Plus:Release 11.2.0.4.0 Production on Tue ...
注:本文来源于《oracle查询某张表的外键(最终解决办法)》 一:几个查询表外键的脚本 select b.table_name, b.column_name from user_constraints a inner join user_cons_columns b on a.constraint_name = b.constraint_name where a.r_constraint_name in ( select e.constraint_name from user_constraints ...
Oracle数据库的结构和数据迁移到PostgreSql数据库(MYSQL,SQL Server相似) 一、数据库迁移分为两步 1.结构迁移;2.数据迁移。 二、需要的工具 1.AWS-Schema-Conversion-Tool;2.Navicat 三、AWS-Schema-Conversion-Tool迁移结构 1. 下载安装AWS-Schema-Conversion-Tool 2.下载完后是一个压缩包,解压后如图: 3.点这...
Table created SQL> set timing on --显示消耗时间 SQL> select count(*) from mytest; --记录数12522708,耗时19秒,已经不小拉 COUNT(*) --- 12522708 Executed in 19 seconds SQL> delete from mytest; --删除表的所有数据,这个过程太长了,涉及到回滚数据的创建,库也不是我一个人在折腾 12522708 rows...