Question

我有点混淆将结果导入两个表，我知道这很简单，但没有得到任何线索.. 这是我的查询给我结果，但是当我使用group by时，它只是给我一行的结果，即使数据库中的实际结果是（300,500）因为我通过以下方式获取结果两个表中常见的lead_id ..

SELECT inv.amount, crmd.computers, crmd.product_id, crmd.pc_opti
FROM invoice AS inv, lead_crm_data AS crmd
WHERE inv.lead_id = '310'
AND crmd.lead_id = '310'
GROUP BY inv.lead_id

这是给定查询的结果..

amount  computers   product_id  pc_opti
300     2           7, 6            2
300     3           7, 6            3
540     2           7, 6            2
540     3           7, 6            3

GROUP BY

的结果

300     2           7, 6            2

渴望REsult

300     2           7, 6            2
540     3           7, 6            3

Answer 1

试试这个：

SELECT inv.amount, crmd.computers, crmd.product_id, crmd.pc_opti
FROM invoice AS inv, lead_crm_data AS crmd
WHERE inv.lead_id = '310'
  AND crmd.lead_id = '310'
GROUP BY inv.amount

您可以使用更好的（恕我直言）语法：

SELECT inv.amount, crmd.computers, crmd.product_id, crmd.pc_opti
FROM invoice AS inv INNER JOIN lead_crm_data AS crmd 
    ON inv.lead_id = crmd.lead_id 
   AND inv.lead_id = '310'
GROUP BY inv.amount

在mysql数据库表中混淆

1 个答案: