DECLARE @Zmienna AS INT
SET @Zmienna = 0

WHILE @Zmienna < 999
BEGIN
    PRINT @Zmienna +
        CASE
            WHEN @Zmienna/3=% THEN ' hip'
            WHEN @Zmienna/5=% THEN ' hop'
        END
    SET @Zmienna = @Zmienna + 1
END

ERROR: Msg 156, Level 15, State 1, Line 8
Incorrect syntax near the keyword 'THEN'.
Msg 102, Level 15, State 1, Line 12
Incorrect syntax near 'END'.

CASE
WHEN @Zmienna % 3 = 0
THEN ' hip'
END
+
CASE
WHEN @Zmienna % 5 = 0
THEN ' hop'
END

DECLARE @Zmienna AS INT
SET @Zmienna = 0

WHILE @Zmienna < 999
BEGIN
    PRINT CAST(@Zmienna as varchar) +
        CASE
            WHEN @Zmienna%3=0 THEN ' hip'
            WHEN @Zmienna%5=0 THEN ' hop'
        END
    SET @Zmienna = @Zmienna + 1
END