After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：Role addition
column指定某一字段為索引查詢(xún)，若只填寫(xiě)一個(gè)值則為查詢(xún)?cè)撟侄蔚囊涣兄?；若填?xiě)兩個(gè)值則，第一個(gè)值為要查詢(xún)的數(shù)據(jù)，第二個(gè)值為索引；同老師視頻中的cates功能相同
2018-05-260個(gè)贊
