delete query in postgresql code example

Example 1: how to remove tables from postgresql

DROP TABLE IF EXISTS tablename;

Example 2: delete entries in postgresql

DELETE FROM table WHERE condition;

Example 3: delete entries in postgresql

DELETE FROM table
USING another_table
WHERE table.id = another_table.id;

Example 4: delete from select postgresql

DELETE FROM mytable 
WHERE ctid IN (
    SELECT ctid
    FROM mytable 
    GROUP BY s.serialId, s.valuetimestamp
    ORDER BY s.serialId
    LIMIT 10
)

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