Hi,
if you define a SERIAL column postgresql's default is to generate a sequence
for each SERIAL column (table_column_seq). But you can use one sequence for
the whole database like this:
CREATE dbsequence;
CREATE TABLE one (
id int4 NOT NULL DEFAULT nextval('dbseq')
);
CREATE TABLE two (
id int4 NOT NULL DEFAULT nextval('dbseq')
);
One drawback: You reach the internal end of a sequence faster if you use your
sequence for all tables. But this can be avoided if you use int8 datatype.
Are there other drawbacks/benfits using one Sequence for each table or one
sequence for all tables?
kind regards,
janning
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