Hi! Yang satu ini sih cukup umum ya, cuma me-refresh dikit aja hehe soalnya sy sendiri kadang lupa, sometime i use "CAPITAL" rather than "UPPER" :D most cases!
A. UPPER “=UPPER()”
A. UPPER “=UPPER()”
B. LOWER “=LOWER()”
C. From UPPER / LOWER / Both into sentence by using “=PROPER()”