postgres.rst
changeset 2399 ed213cf36a1c
parent 2398 ac2b5bc2f2c1
child 2420 da418d28831e
equal deleted inserted replaced
2398:ac2b5bc2f2c1 2399:ed213cf36a1c
   238 
   238 
   239   SELECT * FROM pg_stat_statements
   239   SELECT * FROM pg_stat_statements
   240   WHERE query LIKE '%some%'
   240   WHERE query LIKE '%some%'
   241   ORDER BY calls DESC;
   241   ORDER BY calls DESC;
   242 
   242 
   243 Reveal execution details::
       
   244 
       
   245   EXPLAIN ANALYSE SELECT 1;
       
   246   EXPLAIN (TIMING false, COSTS false, ANALYSE) SELECT 1;
       
   247   EXPLAIN (TIMING false, COSTS false, BUFFERS false, VERBOSE false, ANALYSE) SELECT 1;
       
   248 
       
   249 https://www.postgresql.org/docs/current/pgstatstatements.html
   243 https://www.postgresql.org/docs/current/pgstatstatements.html
   250   ``pg_stat_statements``.
   244   ``pg_stat_statements``.
   251 https://www.postgresql.org/docs/current/indexes-examine.html
   245 https://www.postgresql.org/docs/current/indexes-examine.html
   252   Examining Index Usage.
   246   Examining Index Usage.
       
   247 
       
   248 Reveal execution details::
       
   249 
       
   250   EXPLAIN ANALYSE SELECT 1;
       
   251   EXPLAIN (TIMING false, COSTS false, ANALYSE) SELECT 1;
       
   252   EXPLAIN (TIMING false, COSTS false, BUFFERS false, VERBOSE false, ANALYSE) SELECT 1;
       
   253 
       
   254 https://www.postgresql.org/docs/11/sql-explain.html
       
   255   ``EXPLAIN``.
   253 
   256 
   254 List databases, schemas and tables
   257 List databases, schemas and tables
   255 ==================================
   258 ==================================
   256 
   259 
   257 Default database is ``postgres``.
   260 Default database is ``postgres``.