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MDEV-17001 JSON_MERGE returns nullwhen merging empty array.

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Don't add the comma if nothing appended to the array.
This commit is contained in:
Alexey Botchkov
2018-09-13 13:42:09 +04:00
parent 2b46dca5d7
commit f54485eadb
4 changed files with 24 additions and 20 deletions
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5
mysql-test/t/func_json.test
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@ -463,3 +463,8 @@ SET @`json` := '["A", [{"B": "1"}], {"C": "AB"}, {"D": "BC"}]', @`value` := 'AB'
SELECT JSON_SEARCH(@`json`, 'one', @`value`);
SET @`json` := NULL, @`value` := NULL;
--echo #
--echo # MDEV-17001 JSON_MERGE returns nullwhen merging empty array.
--echo #
SELECT JSON_MERGE('[1]', '[]');