Storage Requirements for Numeric Types : Introduction : Data Types MySQL TUTORIALS

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Storage Requirements for Numeric Types


Data Type Storage Required
TINYINT 1 byte
SMALLINT 2 bytes
MEDIUMINT 3 bytes
INT, INTEGER 4 bytes
BIGINT 8 bytes
FLOAT(p) 4 bytes if 0
FLOAT 4 bytes
DOUBLE [PRECISION], REAL 8 bytes
DECIMAL(M,D), NUMERIC(M,D) Varies; see following discussion
BIT(M) approximately (M+7)/8 bytes





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