In mysql drop table command removes one or more tables from an existing database. Mysql has a couple of ways that i know of there may be more of working out if a table exists.
You must have the drop privilege for each table.
Mysql drop table if exists. Drop table without if exists for tables that dont exist are not written to the binary log. You must have the drop privilege for each table. Restrict cascade drop table removes one or more tables.
If you drop a non existing table with the if exists option mysql generates a note which can be retrieved using the show warnings statement. Drop table if exists doesnt. Mysql drop table if exists recipes.
Mysql 57 reference manual. 15 aug re. This post looks at how to check if a table exists in the mysql database.
This mysql tutorial explains how to use the mysql drop table statement with syntax and examples. Just fyi here is the detail of the warning. If the table is partitioned the.
Drop table if exists doesnt. The mysql drop table statement allows you to remove or delete a table from the mysql database. It doesnt remove specific user privileges associated with the tables.
Drop temporary table if exists tblname tblname. For each table it removes the table definition and all table data. It was not surprising to see that not many people know about the existence of this feature.
The if exists option conditionally drop a table only if it exists. Using show tables the first way is using the show tables function. 15 aug re.
Query ok 0 rows affected. Dropping of temporary tables are prefixed in the log with temporarythese drops are only logged when running statement or mixed mode replication. Drop temporary table if exists tblname tblname.
In this post sql server 2016 t sql enhancement drop if exists clause we have seen the new feature introduced in sql server version 2016one of my friends recently asked me question that how to drop table if exists in mysql database. Note that the drop table statement only drops tables. Drop table if exists are always logged.
If your database called test in this. Restrict cascade drop table removes one or more tables. Be careful with this statement.
Be careful with this statement. For each table it removes the table definition and all table data. It specifies that only temporary tables should be dropped by.
The user who is using the drop command must have drop privilege for each tables he wants to drop. Drop table in replication. Drop table has the following characteristics in replication.
The command removes all the data and table definition from the database. Mysql 80 reference manual. Restrict cascade.
Drop temporary table if exists tablename tablename. Drop table if exists doesnt. If the table is partitioned the.
Drop temporary table if exists tablename1 tablename2.