The UPPER Function
Syntax for the UPPER function:
source-string is a character string expression.
- The data type of the result is the same as the data type of source-string.
- source-string is assumed to be in ISO 8859-1 format. All conversions to uppercase defined in the ISO 8859-1 standard is handled by UPPER, including national characters.
- If the value of source-string is NULL, then the result of the function is NULL.
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