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Questions tagged not-exists

6 questions

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264
votes
11
answers

How to add column if not exists on PostgreSQL?

postgresql postgresql-9.1 not-exists
asked 2012-09-26T08:20:29.840
17
votes
2
answers

mysql: select all items from table A if not exist in table B

mysql select not-exists
asked 2011-01-11T17:56:31.923
9
votes
3
answers

The purpose of SQL's EXISTS and NOT EXISTS

sql mysql subquery exists not-exists
asked 2010-12-16T21:40:31.357
26
votes
4
answers

Insert record into table if entry does not exist in another table- with an extra twist

sql ms-access insert not-exists
asked 2010-02-03T14:24:08.390
416
votes
29
answers

Array.push() if does not exist?

javascript arrays json push not-exists
asked 2010-01-01T10:59:01.393
104
votes
4
answers

MySQL Join Where Not Exists

mysql join not-exists
asked 2009-04-15T04:45:32.743