UPPER and UCASE are equivalent string manipulation functions that manipulation CHARACTER string data and convert lowercase characters in a string to uppercase.
UPPER and UCASE both return a new character string, which is identical to source_string, except that all lowercase letters are replaced with the corresponding uppercase letters.
UPPER('ABCD')returns 'ABCD'.
UCASE('abc123')returns 'ABC123'.
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ESQL
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Developing ESQL
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ESQL string manipulation functions
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