Multiple LEFT JOIN subquery syntax and alias usage in MySQL

Source: Internet
Author: User
Tags mysql in

not much to say directly on the statementSELECTa.ID,A.thumbnail,A. NAME,A.marketprice,A.memberprice,A.personname,A. STATUS,A.recieveorderdate,A.tracknumber,A.contact,A.reportsenddate, B. Tracknumber, A. Reportdownloadpath from    (SELECTOd.id,Ps.thumbnail,PS. NAME,Od.marketprice,Od.memberprice,Od.personname,od. STATUS,Od.recieveorderdate,Ol.tracknumber,Ol.contact,Od.reportsenddate,Od.reportsendorderlogisticid,Od.reportdownloadpath fromorders.order_detail odLeft JOIN orders.order_logistics ol on od.recieveorderlogisticid = Ol.idLeft JOIN orders.product_snapshot ps on od.productsnapshotid = ps.idWHEREod.valid = TRUEand ol.valid = TRUEand Od.orderid =? ) a Left JOIN ( SELECTOl.tracknumber,od.id fromorders.order_detail odLeft JOIN orders.order_logistics ol on od.reportsendorderlogisticid = Ol.idWHEREod.valid = TRUEand ol.valid = TRUEand Od.orderid =?) b on a.id = b.IDPS: The explanation for MySQL in the statement, involved in the left query can be associated with leave join, but generally do not know when to alias when the old iron with parentheses is really headache, so send a template for the rest according to their own business specific implementation.

Multiple LEFT JOIN subquery syntax and alias usage in MySQL

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