Re: Strange Query - Reg

On 03/09/2015 01:35 AM, sramay wrote:
> Hi,
>
> In my postgresql instance in both 9.2 and 9.4 ( community version). I am
> getting the following query executed
> often ( most of the time).

Where are you seeing the query?

What is often, every minute, every hour,etc?

Why? The query is seems to be related to
> catalog management? Why it happens
> can any one give light in this regard?

Not without more information:

1) What applications do you have using the Postgres instances?

2) Do you have monitoring software set up?

3) Are there queries before or after this one that might help shed a
clue on what is sending the query?

>
>
> SELECT NULL AS TABLE_CAT, n.nspname AS TABLE_SCHEM, ct.relname AS
> TABLE_NAME, NOT i.indisunique AS NON_UNIQUE, NULL AS INDEX_QUALIFIER,
> ci.relname AS INDEX_NAME, CASE i.indisclustered WHEN true THEN 1
> ELSE CASE am.amname WHEN 'hash' THEN 2 ELSE 3 END END AS
> TYPE, (i.keys).n AS ORDINAL_POSITION, pg_catalog.pg_get_indexdef(ci.oid,
> (i.keys).n, false) AS COLUMN_NAME, CASE am.amcanorder WHEN true THEN
> CASE i.indoption[(i.keys).n - 1] & 1 WHEN 1 THEN 'D' ELSE 'A'
> END ELSE NULL END AS ASC_OR_DESC, ci.reltuples AS CARDINALITY,
> ci.relpages AS PAGES, pg_catalog.pg_get_expr(i.indpred, i.indrelid) AS
> FILTER_CONDITION FROM pg_catalog.pg_class ct JOIN pg_catalog.pg_namespace
> n ON (ct.relnamespace = n.oid) JOIN (SELECT i.indexrelid, i.indrelid,
> i.indoption, i.indisunique, i.indisclustered, i.indpred,
> i.indexprs, information_schema._pg_expandarray(i.indkey) AS keys
> FROM pg_catalog.pg_index i) i ON (ct.oid = i.ind
>
> Thanking you in advance,
>
> Regards
>
> Ramachandran S
>
>
>
> --
> View this message in context: http://postgresql.nabble.com/Strange-Query-Reg-tp5841071.html
> Sent from the PostgreSQL - sql mailing list archive at Nabble.com.
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com