sql data types postgres code example

Example: data types mysql vs postgresql

MySQL                   PostgreSQL          SQLite

TINYINT                 SMALLINT            INTEGER
SMALLINT                SMALLINT
MEDIUMINT               INTEGER
BIGINT                  BIGINT
BIT                     BIT                 INTEGER
_______________________________________________________

TINYINT UNSIGNED        SMALLINT            INTEGER
SMALLINT UNSIGNED       INTEGER
MEDIUMINT UNSIGNED      INTEGER
INT UNSIGNED            BIGINT
BIGINT UNSIGNED         NUMERIC(20)
_______________________________________________________

DOUBLE                  DOUBLE PRECISION    REAL
FLOAT                   REAL                REAL
DECIMAL                 DECIMAL             REAL
NUMERIC                 NUMERIC             REAL
_______________________________________________________

BOOLEAN                 BOOLEAN             INTEGER
_______________________________________________________

DATE                    DATE                TEXT
TIME                    TIME
DATETIME                TIMESTAMP
_______________________________________________________

TIMESTAMP DEFAULT       TIMESTAMP DEFAULT   TEXT
NOW()                   NOW()   
_______________________________________________________

LONGTEXT                TEXT                TEXT
MEDIUMTEXT              TEXT                TEXT
BLOB                    BYTEA               BLOB
VARCHAR                 VARCHAR             TEXT
CHAR                    CHAR                TEXT
_______________________________________________________

columnname INT          columnname SERIAL   INTEGER PRIMARY 
AUTO_INCREMENT                              KEY AUTOINCREMENT