[5.3] Double quote MySQL JSON expressions #16308
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Based on MySQL guide: http://dev.mysql.com/doc/refman/5.7/en/json-path-syntax.html
Some characters like Hyphens are not allowed in ECMAScript identifiers so we must double quote the parts of the JSON expression for it to work.
This change will convert
meta->name->first-name
tometa->'$."name"."first-name"'
.