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create table t1(a NUMERIC(5,3), b NUMERIC(5,1), c float(5,2),
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d NUMERIC(6,4), e float, f DECIMAL(6,3), g int(11), h DOUBLE(10,3),
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select COLUMN_NAME,COLUMN_TYPE, CHARACTER_MAXIMUM_LENGTH,
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select COLUMN_NAME,COLUMN_TYPE, CHARACTER_MAXIMUM_LENGTH,
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CHARACTER_OCTET_LENGTH, NUMERIC_PRECISION, NUMERIC_SCALE
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from information_schema.columns where table_name= 't1';
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COLUMN_NAME COLUMN_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE