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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_TEMP (NAME varchar(64), BIRTHDATE date); insert into TEST_TEMP values ('123', to_date('1990-01-03', 'YYYY-MM-DD')); insert into TEST_TEMP values ('456', to_date('1999-02-03', 'YYYY-MM-DD')); insert into TEST_TEMP values ('789', to_date('1990-03-03', 'YYYY-MM-DD')); insert into TEST_TEMP values ('987', to_date('1999-04-03', 'YYYY-MM-DD')); CREATE VIEW TEST AS SELECT * FROM TEST_TEMP OFFSET 0 ROWS FETCH NEXT 3 ROWS ONLY; create or replace view TEMP_COUNT1 as SELECT tbl."NAME", CASE WHEN EXTRACT(DAY FROM BIRTHDATE) IN (5, 12, 19, 26) AND 'false'='false' THEN 1 WHEN EXTRACT(DAY FROM BIRTHDATE) NOT IN (5, 12, 19, 26) AND 'false'='false' THEN 0 ELSE 1 END AS IS_CONTROL_GROUP FROM TEST tbl; SELECT COUNT(*) FROM TEMP_COUNT1 WHERE "IS_CONTROL_GROUP" = 0;

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