Rhaoni Chiu Pereira wrote:
Hi list,
I have a table like this:
CREATE TABLE "gsames00" (
"ano_mes" varchar(6) NOT NULL,
"descricao" varchar(30),
PRIMARY KEY ("ano_mes")
);
and an index like this:
CREATE INDEX GSAMES01 ON GSAMES00 (ANO_MES);
When I run a explain analyze with this where clause:
... gsames00.ano_mes = to_char(ftnfco00.data_emissao,'YYYYMM') AND ...
ftnfco00.data_emissao is a timestamp. When I run the explain analyze it says:
...
-> Seq Scan on gsames00 (cost=100000000.00..100000006.72 rows=372 width=10)
(actual time=0.01..0.96 rows=372 loops=19923)
...
looking at the cost I guess that you never run vacuum analyze on your
table, do it and let us know.
Regards
Gaetano Mendola
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