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7.3.2 Numeric types

Column type Storage required
TINYINT 1 byte
SMALLINT 2 bytes
MEDIUMINT 3 bytes
INT 4 bytes
INTEGER 4 bytes
BIGINT 8 bytes
FLOAT(X) 4 if X <= 24 or 8 if 25 <= X <= 53
FLOAT 4 bytes
DOUBLE 8 bytes
DOUBLE PRECISION 8 bytes
REAL 8 bytes
DECIMAL(M,D) M bytes (D+2, if M < D)
NUMERIC(M,D) M bytes (D+2, if M < D)

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