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SQL code:
SELECT * ,
±¥ºÍ¶È = £¨30×£¨30+40+50£©+ 30 ×£¨31+41+51£©+ 60×£¨32+42+52£©£©/ 50×£¨30+30+60£©
from TB
SQL code:
SELECT * ,
±¥ºÍ¶È = cast( ( (30×(30+40+50)+ 30 ×(31+41+51)+ 60×(32+42+52))) *100.00 / 50×(30
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