db.collection('Member-Reg').where("Member_Biyeshijian.substr(0,3)=='2001'").get();报错
需要取Member_Biyeshijian字段的左边4位,进行判断,如何书写where条件呢?
db.collection('Member-Reg').where("Member_Biyeshijian.substr(0,3)=='2001'").get();报错
需要取Member_Biyeshijian字段的左边4位,进行判断,如何书写where条件呢?
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DCloud_uniCloud_WYQ
"substr(Member_Biyeshijian,0,4)=='2001'"