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MDEV-25822 JSON_TABLE: default values should allow non-string literals

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(Polished initial patch by Alexey Botchkov)
Make the code handle DEFAULT values of any datatype

- Make Json_table_column::On_response::m_default be Item*, not LEX_STRING.
- Change the parser to use string literal non-terminals for producing
  the DEFAULT value
-- Also, stop updating json_table->m_text_literal_cs for the DEFAULT
   value literals as it is not used.
This commit is contained in:
Sergei Petrunia
2024-07-23 14:33:33 +03:00
parent 231900e5bb
commit d0a6a7886b
7 changed files with 101 additions and 43 deletions
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6
mysql-test/suite/json/t/json_table_mysql.test
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@@ -445,11 +445,8 @@ SELECT * FROM JSON_TABLE('"asdf"', '$' COLUMNS(
f FLOAT PATH '$',
d DECIMAL PATH '$')) AS jt;
# DEFAULT NULL is not accepted syntax.
--error ER_PARSE_ERROR
SELECT * FROM
JSON_TABLE('{}', '$' COLUMNS (x INT PATH '$.x' DEFAULT NULL ON EMPTY)) jt;
--error ER_PARSE_ERROR
SELECT * FROM
JSON_TABLE('{}', '$' COLUMNS (x INT PATH '$.x' DEFAULT NULL ON ERROR)) jt;
@@ -457,13 +454,10 @@ SELECT * FROM
JSON_TABLE('{}', '$' COLUMNS (x INT PATH '$.x' DEFAULT 0 ON EMPTY)) jt;
SELECT * FROM
JSON_TABLE('{}', '$' COLUMNS (x INT PATH '$.x' DEFAULT 0 ON ERROR)) jt;
# We don't accept dates in DEFAULT
--error 1064
SELECT * FROM
JSON_TABLE('{}', '$' COLUMNS (x DATE
PATH '$.x'
DEFAULT DATE'2020-01-01' ON EMPTY)) jt;
--error 1064
SELECT * FROM
JSON_TABLE('{}', '$' COLUMNS (x DATE
PATH '$.x'