如何在联合中已合并2个查询的表中添加1个没有任何匹配项的表

Question

我合并了两个查询... [qry_soldering]和[qry_smtline] ...

SELECT [PIC], [Total seconds], [SortByWeek], [date_worked_smt],[day]
FROM [qry_smt_line]
UNION 
SELECT [PIC], [total time], [SortByWeek], [date_worked_soldering],[day]
FROM [qry_soldering]
ORDER BY [PIC] DESC;

如何在该联合中添加新表[tbl_day]？有可能吗？

Answer 1

插入第三个查询以与前两个查询合并-并考虑使用 UNION ALL ：

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