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SQLize.online is a free online SQL environment for quickly running, experimenting with and sharing code.
You can run your SQL code on top of the most popular RDBMS including MySQL, MariaDB, SQLite, PostgreSQL, Oracle and Microsoft SQL Server.
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drop table emp2; create table emp2 as select * from employees; drop table dep2; create table dep2 as select * from departments; alter table emp2 modify employee_id primary key; select * from user_constraints where table_name = upper('emp2'); alter table emp2 drop constraint SYS_C0027579;
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