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SELECT STRING_AGG(S, ' ') Result FROM ( VALUES (1, '555 RODeo drive'), (2, '555 rodeo drive'), (3, '555 RODEO DRIVE'), (4, 'UNITED STATES') ) T(ID, Str) CROSS APPLY ( SELECT CONCAT(UPPER(LEFT(Value, 1)), LOWER(RIGHT(Value, LEN(Value) -1))) S FROM STRING_SPLIT(Str, ' ') ) TT GROUP BY ID;
Result
555 Rodeo Drive
555 Rodeo Drive
555 Rodeo Drive
United States