Thread: nested query

nested query

From
Mustapha Amrani
Date:
I have two linked tables Table1 and Table2. I have deleted some rows in table1
Now I need two delete the rows in table2 that correspond to the rows
deleted in table1. The two table are linked by field id.
I tried the following but with no success:
delete * from table2 where not exists (select * from table1 where
table2.id=id);

Any help much appreciated.

Mustapha


Re: nested query

From
"Oliver Elphick"
Date:
Mustapha Amrani wrote:
  >I have two linked tables Table1 and Table2. I have deleted some rows in tabl
      >e1
  >Now I need two delete the rows in table2 that correspond to the rows
  >deleted in table1. The two table are linked by field id.
  >I tried the following but with no success:
  >delete * from table2 where not exists (select * from table1 where
  >table2.id=id);

How about:

DELETE FROM table2 WHERE id NOT IN (select id FROM table1);

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Oliver Elphick                                Oliver.Elphick@lfix.co.uk
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