On Thu, 14 Aug 2003, Slawek Jarosz wrote: > Hi, > > I trying to write a query that will join 2 tables. Here's the concept:
> Table 1: table1, primary key pk1 Table 2: table2, primary key pk2 > > One of the fields (f2) in table2 contains either the primary key of > table1 or a NULL value. So normally a pretty basic query: > > SELECT table1.*, table2.pk2 FROM table1, table2 WHERE table2.f2 = > table1.pk1; > > BUT what I would like to do is show all records of Table 1 even if > there is no match in Table 2. Meaning that the reults could be > table1... table2.pk2 > table1... NULL See outer joins. Something like: SELECT table1.*,table2.pk FROM table1 LEFT OUTER JOIN table on (table2.f2=table1.pk1); ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
