Perfect, thank you! ~G~ On Mar 15, 9:26 pm, Michael Bayer <[EMAIL PROTECTED]> wrote: > a SQL statement containing joins usually has the joins in a chain: > > select * from table1 JOIN table2 ON table1.somecolumn = > table2.somecolumn JOIN table3 on table2.somecolumn=table3.somecolumn ... > > SQLAlchemy's join function works in a similar way. you can keep > calling "join" on the previous "join" in a generative fashion: > > j = table1.join(table2, table1.c.somecolumn==table2.c.somecolumn).join > (table3, table2.c.somecolumn==table3.c.somecolumn) > > the above construct generates into just the "join" clause part of the > SQL statement. but it is a "selectable", meaning its an element that > contains its own list of columns and can be used in the FROM clause > of a SELECT statement. > > when you have a selectable, you can select all columns by saying: > > j.select() > > or the selectable can be added to the FROM clause of any select using > from_obj; > > s = select([table1.c.col1, table2.c.col2, ...], from_obj=[j]) > > using from_obj as above, you can combine the join with any other set > of selectables. > > On Mar 15, 2007, at 7:13 PM, Gloria wrote: > > > > > Hi All, > > Good examples of rudimentary joins of 3 or more tables are hard to > > find. Please point me to some decent examples. > > Thank you, > > ~G~
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