i'm trying to alter a table call it 'my_table' and i'm trying to set the
field 'my_id' to prevent null values from being inserted. when i run the
following:
ALTER TABLE my_table ALTER my_id SET NOT NULL;
i get:
ERROR: ALTER TABLE: Attribute "my_id" contains NULL values
so i want to find out which rows have null values so i run:
my=# select my_id from my_table where my_id=NULL;
my_id
---------
(0 rows)
so this would indicate to me that there are no rows in which my_id is NULL.
so what is preventing me from altering the table? or am i just doing
something wrong?
--
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| /"\
john harrold | \ / ASCII ribbon campaign
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What difference does it make to the dead, the orphans, and the homeless,
whether the mad destruction is brought under the name of totalitarianism or
the holy name of liberty and democracy?
--Gandhi
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