Re: Drop statement in stored procedure 1611 tomas bar January 29, 2010 04:35AM Sorry, you can't reply to this topic. It has been closed. Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily...
TheDEALLOCATEstatement. Frees up the resources associated with the prepared statement. Note:If you are interested in how to create an index in a new table, read our guideMySQL Index: Usage, Management & Troubleshooting. MySQL DROP TABLE vs. TRUNCATE There are two ways to remove all data from...
The MySQL DROP TABLE StatementThe DROP TABLE statement is used to drop an existing table in a database.SyntaxDROP TABLE table_name; Note: Be careful before dropping a table. Deleting a table will result in loss of complete information stored in the table!
The DROP statement must always be used carefully since if misused, it could possibly end in data loss. Before executing any DROP statements, always make sure you have sufficient backups. How to DROP All the tables in MySQL? Dropping all tables in a MySQL database is quite straightforward. H...
When a table is dropped, privileges granted specifically for the table arenotautomatically dropped. They must be dropped manually. SeeSection 13.7.1.4, “GRANT Statement”. If any tables named in the argument list do not exist,DROP TABLEbehavior depends on whether theIF EXISTSclause is given: ...
13.7.1.3 DROP USER Statement DROP USER [IF EXISTS] user [, user] ... The DROP USER statement removes one or more MySQL accounts and their privileges. It removes privilege rows for the account from all grant tables. To use DROP USER, you must have the global CREATE USER privilege, or...
通过使用MySQL的信息模式(information_schema),我们可以查询表的元数据信息。 输入以下命令以生成每个表的Drop语句: SELECTCONCAT('DROP TABLE IF EXISTS ',table_name,';')ASstatementFROMinformation_schema.tablesWHEREtable_schema='db'; 1. 2. 3.
DROP 是MySQL 中的一个数据定义语言(DDL)语句,用于删除数据库中的表、数据库、索引、视图等对象。DROP 语句会永久删除指定的对象,并且无法恢复。 相关优势 简洁高效:DROP 语句执行速度快,能够快速删除不再需要的对象。 节省空间:删除对象后,相关的磁盘空间会被释放。 类型 删除表: 删除表: 删除数据库: 删除数据...
mysql> HELP ‘DROP DATABASE’;Name: ‘DROP DATABASE’Description:Syntax:DROP {DATABASE | SCHEMA} [IF EXISTS] db_nameDROP DATABASE drops all tables in the database and deletes thedatabase. Be very careful with this statement! To use DROP DATABASE,you need the DROP privilege on the data...
Running a create table or a database drop takes ages. I can literally watch tv in the meantime. So I did a profiling of the database drop statement. mysql> SHOW PROFILES; +---+---+---+ | Query_ID | Duration | Query | +---+---+---+ | 1 | 369.54719400 | drop database ...