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MDEV-22976 CAST(JSON_EXTRACT() AS DECIMAL) does not handle boolean values

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Item_func_json_extract did not implement val_decimal(),
so CAST(JSON_EXTRACT('{"x":true}', '$.x') AS DECIMAL) erroneously
returned 0 with a warning because of convertion from the string "true"
to decimal.

Implementing val_decimal(), so boolean values are correctly handled.
This commit is contained in:
Alexander Barkov
2020-06-22 15:43:53 +04:00
parent 009ef36d9a
commit 30903c3743
4 changed files with 62 additions and 0 deletions
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13
mysql-test/t/func_json.test
View File

@@ -540,6 +540,19 @@ SELECT JSON_MERGE_PATCH('{}');
SELECT JSON_MERGE_PATCH('{', '[1,2,3]');
SELECT JSON_MERGE_PATCH('{"a":"b"}', '[1,');
--echo #
--echo # MDEV-22976 CAST(JSON_EXTRACT() AS DECIMAL) does not handle boolean values
--echo #
SELECT
CAST(JSON_EXTRACT('{"x":true}', '$.x') AS DOUBLE) AS cf,
CAST(JSON_EXTRACT('{"x":true}', '$.x') AS DECIMAL) AS cd;
SELECT
CAST(JSON_EXTRACT('{"x":false}', '$.x') AS DOUBLE) AS cf,
CAST(JSON_EXTRACT('{"x":false}', '$.x') AS DECIMAL) AS cd;
--echo #
--echo # End of 10.2 tests
--echo #