CREATE UNIQUE INDEX uidx_thename ON names(the_name);
Should prevent duplicates.
Ian Harding
Programmer/Analyst II
Tacoma-Pierce County Health Department
iharding@tpchd.org
Phone: (253) 798-3549
Pager: (253) 754-0002
>>> Scott Frankel <leknarf@pacbell.net> 12/01/04 10:11 AM >>>
I want to ensure data integrity when inserting into a table, preventing
multiple
entries of identical rows of data.
Does this call for using a trigger?
How would triggers perform a query to test if data already exists in
the table?
(The doco outlines how triggers perform tests on NEW data inserted into
a
table; but I haven't found anything on data already extant.)
Thanks in advance!
Scott
sample table:
CREATE TABLE names (the_id SERIAL PRIMARY KEY, the_name text);
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TIP 4: Don't 'kill -9' the postmaster
