lihaosky commented on code in PR #26474:
URL: https://github.com/apache/flink/pull/26474#discussion_r2066877602
##########
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/functions/JsonFunctionsITCase.java:
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@@ -821,12 +821,18 @@ private static List<TestSetSpec> jsonSpec() {
json("[1, 2, 3]")),
"JSON_OBJECT(KEY 'p1' VALUE JSON(f0), KEY 'p2'
VALUE JSON(f1), KEY 'p3' VALUE JSON('[1, 2, 3]'))",
"{\"p1\":{\"key\":\"value\"},\"p2\":{\"key\":{\"value\":42}},\"p3\":[1,2,3]}",
- STRING().notNull()),
-
- // Tests for JSON calls inside of JSON_ARRAY
- TestSetSpec.forFunction(BuiltInFunctionDefinitions.JSON_ARRAY)
- .onFieldsWithData("{\"key\":\"value\"}", "{\"key\":
{\"value\": 42}}")
- .andDataTypes(STRING(), STRING())
+ STRING().notNull())
+ .testSqlValidationError(
+ "JSON_OBJECT(KEY JSON('{}') VALUE 'value'
ABSENT ON NULL)",
+ "The JSON() function is currently only
supported inside a JSON_OBJECT() or JSON_ARRAY() function.")
Review Comment:
The error message is confusing though. `JSON()` function is indeed inside
`JSON_OBJECT`. We need to make it more accurate that it also needs to be in
value position?
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