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InterSystems SQL Reference
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A function that returns the number of characters in an expression.
expression An expression, which can be the name of a column, a string literal, or the result of another scalar function. The underlying data type can be a character type (such as CHAR or VARCHAR), a numeric, or a data stream.
DATALENGTH returns the INTEGER data type.
The DATALENGTH, CHAR_LENGTH, and CHARACTER_LENGTH functions are identical. Use of the CHAR_LENGTH function is recommended for new code. DATALENGTH is provided for TSQL compatibility. Refer to CHAR_LENGTH for further details.
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Content Date/Time: 2019-08-22 06:48:58