Hello List,
A question about index. It mentioned in postgresql 8.0 doc "a query or
data manipulation command can use *at most one index* *per table*". An
example query is:
select * from A left join B using (id) where A.type='apple' and
A.isExport=true;
"id" is the primary key for both table A & B. If index (type, isExport)
has been created for table A. In the above query, will this index works?
Thanks a lot,
Emi
