On 10/19/05, Peter Brawley wrote: >> >> I am having problems with the following query: I am >> trying to join Tax_Bands and Property_Types to Properties >> but the query seems to be joning Tax_Bands to Properties. > > That query generates no error in 5.0.13. There have been several cascading > join bugs, some fixed, some not. What version are you running?
This particular one was fixed in 5.0.12. The fix poses a serious backward compatibility risk for every query using USING or NATURAL, so unless you are exclusively developing for 5 and higher, you should not use them. The shortest explanation of the problem is to just try the following queries: CREATE TABLE test (ID INT); INSERT INTO test (ID) VALUES (1); SELECT * FROM test t1 JOIN test t2 USING (ID); SELECT ID FROM test t1 JOIN test t2 USING (ID); SELECT t1.ID FROM test t1 JOIN test t2 USING (ID); SELECT t2.ID FROM test t1 JOIN test t2 USING (ID); SELECT * FROM test t1 NATURAL JOIN test t2; SELECT ID FROM test t1 NATURAL JOIN test t2; SELECT t1.ID FROM test t1 NATURAL JOIN test t2; SELECT t2.ID FROM test t1 NATURAL JOIN test t2; DROP TABLE test; Writing the full join condition will indeed work. Jochem
