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collie
Constraint Violating Yak Guru
400 Posts |
 Posted - 2009-08-03 : 08:20:11
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| Hi,I need to insert into table Results all candidates from table Candidates. However, if a candidate_id already exists in table Results then i mustn't insert that candidate.How can i do that?ThanksWhisky-my beloved dog who died suddenly on the 29/06/06-I miss u so much. |
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madhivanan
Premature Yak Congratulator
22864 Posts |
Posted - 2009-08-03 : 08:32:41
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| insert into all_candidates(columns)select columns from candidate as cwhere not exists(select * from all_candidate where candidate_id =c.candidate_id )MadhivananFailing to plan is Planning to fail |
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select from table and insert