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sql code mistakes (#53)

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there was no val field in the created tables.
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ibrahim edib kokdemir 2020-07-10 07:53:10 +03:00 committed by GitHub
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docs/usage.rst
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@ -72,7 +72,7 @@ would help a simple query. First, let's see how it behaves:
.. code-block:: psql
EXPLAIN SELECT val FROM hypo WHERE id = 1;
EXPLAIN SELECT * FROM hypo WHERE id = 1;
QUERY PLAN
--------------------------------------------------------
Seq Scan on hypo (cost=0.00..1791.00 rows=1 width=14)
@ -103,7 +103,7 @@ We can run the EXPLAIN again to see if PostgreSQL would use this index:
.. code-block:: psql
:emphasize-lines: 4
EXPLAIN SELECT val FROM hypo WHERE id = 1;
EXPLAIN SELECT * FROM hypo WHERE id = 1;
QUERY PLAN
----------------------------------------------------------------------------------
Index Scan using <18284>btree_hypo_id on hypo (cost=0.04..8.06 rows=1 width=10)
@ -115,7 +115,7 @@ hypothetical index won't be used to acually run the query:
.. code-block:: psql
EXPLAIN ANALYZE SELECT val FROM hypo WHERE id = 1;
EXPLAIN ANALYZE SELECT * FROM hypo WHERE id = 1;
QUERY PLAN
---------------------------------------------------------------------------------------------------
Seq Scan on hypo (cost=0.00..1791.00 rows=1 width=10) (actual time=0.046..46.390 rows=1 loops=1)