DROP TABLE IF EXISTS” CREATE TABLE IF NOT EXITS &n 

关键词：drop table if exists、mysql drop if exists

删除表如果存在创建表如果没有出口,n

MySQL:

DROP TABLE IF EXISTS [table_name]

Oracle:

BEGIN EXECUTE IMMEDIATE ‘DROP TABLE [table_name]’; EXCEPTION WHEN OTHERS THEN NULL;END;

SQL Server:

IF EXISTS ( SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ‘[table_name]’)DROP TABLE [table_name]

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