data types mysql vs postgresql
MySQL PostgreSQL SQLite
TINYINT SMALLINT INTEGER
SMALLINT SMALLINT
MEDIUMINT INTEGER
BIGINT BIGINT
BIT BIT INTEGER
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TINYINT UNSIGNED SMALLINT INTEGER
SMALLINT UNSIGNED INTEGER
MEDIUMINT UNSIGNED INTEGER
INT UNSIGNED BIGINT
BIGINT UNSIGNED NUMERIC(20)
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DOUBLE DOUBLE PRECISION REAL
FLOAT REAL REAL
DECIMAL DECIMAL REAL
NUMERIC NUMERIC REAL
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BOOLEAN BOOLEAN INTEGER
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DATE DATE TEXT
TIME TIME
DATETIME TIMESTAMP
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TIMESTAMP DEFAULT TIMESTAMP DEFAULT TEXT
NOW() NOW()
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LONGTEXT TEXT TEXT
MEDIUMTEXT TEXT TEXT
BLOB BYTEA BLOB
VARCHAR VARCHAR TEXT
CHAR CHAR TEXT
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columnname INT columnname SERIAL INTEGER PRIMARY
AUTO_INCREMENT KEY AUTOINCREMENT