Question

我希望将我的数据库列（＆＃34;。$ subject_column。＆＃34; _theory ）乘以10/7（我的主题总数是70，我想将其转换为100以找到成绩。）在乘法之后，结果必须四舍五入

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Answer 1

$update_subject_statement4 = "UPDATE ".$track_table_name."

SET `".$subject_column."` = ROUND(IF(`".$subject_column."_theory`='ab',0,`".$subject_column."_theory`) * 7 / 10) 
WHERE
evaluation_division="."'$eval_div' 
AND evaluation_config_id = ".$config_id." 
AND stream_index = ".$stream_index;   

$additional_sum_update_query = $this->db->query($update_subject_statement4);

第一名我们multiplied您的价值 7/10

IF（".$subject_column."_theory ='ab'，0，".$subject_column."_theory） * 7/10

第二名我们rounded

ROUND（ IF（".$subject_column."_theory ='ab'，0，".$subject_column."_theory）* 7/10 ）

通过乘法和四舍五入更新列值

1 个答案: