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ann
Posting Yak Master
220 Posts |
 Posted - 2009-11-20 : 16:54:02
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| I need to update a table with a new field based on the information (count) on another table:Table1:ID Title *PgCount(new Field - int)1 abc2 def 3 ghitable2:tbl2ID ID 1 12 13 14 25 23 3Results in Table1:ID Title *PgCount(new Field - int)1 abc 32 def 23 ghi 1I know how to do a count and I know how to do an update, what I don't know is how to combine the 2 to get the above results.Can anyone help on this?Thanks |
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robvolk
Most Valuable Yak
15732 Posts |
Posted - 2009-11-20 : 17:19:10
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| UPDATE A SET PGCount=Z.CntFROM Table1 AINNER JOIN (SELECT Tbl2ID, count(*) Cnt FROM Table2 GROUP BY Tbl2ID) ZON A.ID=Z.Tbl2ID |
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X002548
Not Just a Number
15586 Posts |
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