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Fix JSON parsing: future-proof data representation in JSON, code cleanup

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Sergei Petrunia
2021-08-29 14:37:45 +03:00
parent a0b4a86822
commit 2a1cdbabec
6 changed files with 1351 additions and 1290 deletions
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22
mysql-test/main/statistics_json.test
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@ -37,6 +37,8 @@ analyze select * from t1_json where a between 'a-3a' and 'zzzzzzzzz';
explain extended select * from t1_json where a < 'b-1a';
analyze select * from t1_json where a > 'zzzzzzzzz';
drop table ten;
# test different valid JSON strings that are invalid histograms.
UPDATE mysql.column_stats SET histogram='["a-1", "a-2", {"a": "b"}, "a-3"]' WHERE table_name='t1_json';
FLUSH TABLES;
@ -45,23 +47,23 @@ explain extended select * from t1_json where a between 'a-3a' and 'zzzzzzzzz';
--source include/have_sequence.inc
create table users (
create table t2 (
city varchar(100)
);
set histogram_size=50;
insert into users select 'Moscow' from seq_1_to_99;
insert into users select 'Helsinki' from seq_1_to_2;
insert into t2 select 'Moscow' from seq_1_to_99;
insert into t2 select 'Helsinki' from seq_1_to_2;
set histogram_type=json_hb;
analyze table users persistent for all;
explain extended select * from users where city = 'Moscow';
analyze select * from users where city = 'Moscow';
explain extended select * from users where city = 'Helsinki';
analyze select * from users where city = 'helsinki';
explain extended select * from users where city < 'Lagos';
analyze table t2 persistent for all;
explain extended select * from t2 where city = 'Moscow';
analyze select * from t2 where city = 'Moscow';
explain extended select * from t2 where city = 'Helsinki';
analyze select * from t2 where city = 'helsinki';
explain extended select * from t2 where city < 'Lagos';
drop table t1_bin;
drop table t1_json;
drop table users;
drop table t2;
DELETE FROM mysql.column_stats;