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SQLize Online / PHPize Online  /  SQLtest Online

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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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CREATE TABLE test(uuid text); insert into test select uuid_generate_v4()::text from generate_series(1,1000000); explain analyze select count(*) from (select uuid::varchar(5) from test) t1; explain analyze select count(*) from (select left(uuid, 5) from test) t1; explain analyze select count(*) from (select uuid::varchar(5) from test) t1; explain analyze select count(*) from (select left(uuid, 5) from test) t1; explain analyze select count(*) from (select uuid::varchar(5) from test) t1; explain analyze select count(*) from (select left(uuid, 5) from test) t1; explain analyze select count(*) from (select uuid::varchar(5) from test) t1; explain analyze select count(*) from (select left(uuid, 5) from test) t1;

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