![]() ![]() In MySQL, transcoding names are the same as the corresponding character set names. In this form, CONVERT() with USING is used to convert data between different character sets (utf8, latin1. See Practice #1-5.Ĭonverts an unsigned integer to a signed integer.įor an example of a practical use, read Tip #2 in How to enforce data type constraint article.Ĭonverts a signed integer to an unsigned integer.įorm 2: CONVERT( expr USING transcoding_name) The default precision is two digits after the decimal point. The optional arguments M and D specify the precision (M specifies the total number of digits)Īnd the scale (D specifies the number of digits after the decimal point) of theĭecimal value. See Practice #1-4.Ĭonverts a value to DECIMAL data type. See Practice #1-3.Ĭonverts a value to DATETIME data type in the format of YYYY-MM-DD HH:MM:SS. BINARY also causes trailing spaces to be significant.Ĭonverts a value to character type of data.ĬHAR(N) causes the convert to use no more than N characters of the argument.Ĭonverts a value to DATE data type in the format of YYYY-MM-DD. ![]() This causes the comparison to be case sensitive even if the column isn'tĭefined as BINARY or BLOB. The type can be one of the following values:Īfter a value is converted to BINARY type, comparisons are conducted byte by byte rather thanĬharacter by character. In this form, CONVERT takes a value in the form of expr and converts it to a value of type. There are three Conversion Functions in MySQL: CONVERT, CAST, BINARY.ĬONVERT can be used in either of the following two forms: ![]() MySQL Conversion Functions convert a value from one data type to another. ![]()
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