Question

MySQL查询： -

IDWriteTextLayout

正如您所看到的，我正在为product_id搜索五个不同的表。但它显示以下错误

第2行的错误1064（42000）：您的SQL语法出错;查看与您的MySQL服务器版本相对应的手册，以便在APR附近使用正确的语法。SET \`products_id\`=(SELECT COALESCE(APR. \`productid\`, BPR. \`productid\`, CPR. \`productid\`, DPR. \`productid\`, EPR. \`productid\`, '') as productid FROM \`gra\`.\`product\` AS APR WHERE APR.\`mfgpartno\` =\`fgt\`.\`products_mfg_part_no\` && \`APR\`.\`manufacturerid\` = \`fgt\`.\`manufacturers_id\` LEFT JOIN \`grb\`.\`product\` AS BPR ON BPR.\`mfgpartno\` =\`csv_temp_table\`.\`products_mfg_part_no\` && \`BPR\`.\`manufacturerid\` =\`fgt\`.\`manufacturers_id\` LEFT JOIN \`grc\`.\`product\` AS CPR ON CPR.\`mfgpartno\` =\`fgt\`.\`products_mfg_part_no\` && \`CPR\`.\`manufacturerid\`=\`fgt\`.\`manufacturers_id\` LEFT JOIN \`grd\`.\`product\` AS DPR ON DPR.\`mfgpartno\` =\`fgt\`.\`products_mfg_part_no\` && \`DPR\`.\`manufacturerid\` =\`fgt\`.\`manufacturers_id\` LEFT JOIN \`gre\`.\`product\` AS EPR ON EPR.\`mfgpartno\` =\`fgt\`.\`products_mfg_part_no\` && \`EPR\`.\`manufacturerid\`=\`fgt\`.\`manufacturers_id\`) ; = mfgpartno。csv_temp_table＆amp;＆amp; 。products_mfg_part_no`manufactu＆＃39;在第64行

过去几个小时我一直被困在这里。请帮我。感谢

Answer 1

尝试此查询

 SET  @products_id=(SELECT COALESCE(APR.`productid`,
                                         BPR.`productid`,
                                         CPR.`productid`,
                                         DPR.`productid`,
                                         EPR.`productid`, 
                                                          '') as productid
    FROM   
    `gra`.`product` AS APR

    LEFT JOIN `grb`.`product` AS BPR
    ON  BPR.`mfgpartno` =`csv_temp_table`.`products_mfg_part_no` &&  `BPR`.`manufacturerid` =`fgt`.`manufacturers_id`
    LEFT JOIN `grc`.`product` AS CPR
    ON  CPR.`mfgpartno` =`fgt`.`products_mfg_part_no` && `CPR`.`manufacturerid`=`fgt`.`manufacturers_id`
    LEFT JOIN `grd`.`product` AS DPR
    ON  DPR.`mfgpartno` =`fgt`.`products_mfg_part_no` && `DPR`.`manufacturerid` =`fgt`.`manufacturers_id`
    LEFT JOIN `gre`.`product` AS EPR
    ON  EPR.`mfgpartno` =`fgt`.`products_mfg_part_no` && `EPR`.`manufacturerid`=`fgt`.`manufacturers_id`  
    WHERE  APR.`mfgpartno` =`fgt`.`products_mfg_part_no` && `APR`.`manufacturerid` = `fgt`.`manufacturers_id`)  ;

mysql查询显示错误

1 个答案: