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Added more digits to JSON output of double

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sprintf() format of double changed from '%lg' to '%-.11lg'

The change was to make it easier to read optimizer trace output
with tables that has millions of records.
This commit is contained in:
Monty
2020-04-17 17:41:49 +03:00
parent 8d74d30dde
commit 27d9986c1b
15 changed files with 837 additions and 730 deletions
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9
mysql-test/main/opt_trace.test
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@@ -1,4 +1,5 @@
--source include/not_embedded.inc
--source include/have_sequence.inc
SELECT table_name, column_name FROM information_schema.columns where table_name="OPTIMIZER_TRACE";
show variables like 'optimizer_trace';
set optimizer_trace="enabled=on";
@@ -567,4 +568,12 @@ select * from t3 where (a,a) in (select t1.a, t2.a from t1, t2 where t1.b=t2.b);
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.semijoin_table_pullout')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1,t2,t3;
--echo #
--echo # Test many rows to see output of big cost numbers
--echo #
select count(*) from seq_1_to_10000000;
select * from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
set optimizer_trace='enabled=off';