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Fix formatting on pg_array_column_postgrest

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Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>
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Pierre-Yves Chibon 2021-02-17 09:59:08 +01:00
parent 4f0a08ac18
commit 5c96c94175
1 changed files with 7 additions and 7 deletions
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8
docs/datanommer_datagrepper/pg_array_column_postgrest.rst
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@ -1,5 +1,5 @@
Using the array type for user and package queries Using the array type for user and package queries
=============================== =================================================
Currently, we use auxiliary tables to query for messages related to packages or users, Currently, we use auxiliary tables to query for messages related to packages or users,
in the standard RDBS fashion. in the standard RDBS fashion.
@ -64,7 +64,7 @@ Findings
-------- --------
Querying just the package membership Querying just the package membership
~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The queries were surprisingly fast, with maximum under 4 seconds and The queries were surprisingly fast, with maximum under 4 seconds and
mean around half a second. This encouraged us to do further experiments. mean around half a second. This encouraged us to do further experiments.
@ -78,7 +78,7 @@ Results ::
Time per Request - mean: 0.522946, min: 0.000000, max: 3.907548 Time per Request - mean: 0.522946, min: 0.000000, max: 3.907548
Querying just the package membership ordered by timestamp desc Querying just the package membership ordered by timestamp desc
~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Usually we want to see most recent messages. So we ammended the query, Usually we want to see most recent messages. So we ammended the query,
to include "order by timestamp desc". The result was less encouraging, to include "order by timestamp desc". The result was less encouraging,
@ -95,7 +95,7 @@ Results ::
Time per Request - mean: 7.474040, min: 0.000000, max: 99.880939 Time per Request - mean: 7.474040, min: 0.000000, max: 99.880939
Conclusion Conclusion
-------------- ----------
While array support seems interesting, and for simple queries very fast, indexes that require ordering While array support seems interesting, and for simple queries very fast, indexes that require ordering
don't seem to be supported. This makes strong case against using them. don't seem to be supported. This makes strong case against using them.