Currently I am trying to return a three table join to find duplicate track titles that are in my a "track" table, and also return the track number | cd title from the other joined tables. My select statement is currently returning all the information from the joined tables but its not showing only the duplicates.
I have also tried using a group by and having clause to try to find a COUNT of comptitle. When I tried that it returned the an empty table.
My Tables:
CREATE TABLE composition (compid, comptitle,..., PRIMARY KEY (compid),...);CREATE TABLE recording (rcdid,..., compid, PRIMARY KEY (rcdid, compid),...);CREATE TABLE cd (cdid, cdtitle,..., PRIMARY KEY(cdid),...);CREATE TABLE track (cdid, trknum,..., rcdid, compid, PRIMARY KEY (cdid, trknum),...);
My statement:
SELECT comptitle, trknum, cdtitle FROM track JOIN recording ON track.rcdid = recording.rcdid JOIN composition ON recording.compid = composition.compid JOIN cd ON cd.cdid = track.cdid;
Output expected | actual:
EXPECTED: comptitle | trknum | cdtitle -------------------------------------------- Cousin Mary | 2 | Giant Steps Cousin Mary | 10 | Giant Steps Giant Steps | 1 | Giant Steps Giant Steps | 8 | Giant Steps ACTUAL: comptitle | trknum | cdtitle ----------------------------+--------+------------- Giant Steps | 8 | Giant Steps Giant Steps | 1 | Giant Steps Stomp of King Porter | 1 | Swing Sing a Study in Brown | 2 | Swing Cousin Mary | 14 | Swing Cousin Mary | 10 | Giant Steps