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Teach jsonpath string() to unwrap in lax mode

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This was an ommission in commit 66ea94e, and brings it into compliance
with both other methods and the standard.

Per complaint from David Wheeler.

Author: David Wheeler, Jeevan Chalke
Reviewed-by: Chapman Flack

Discussion: https://postgr.es/m/A64AE04F-4410-42B7-A141-7A7349260F4D@justatheory.com
This commit is contained in:
Andrew Dunstan
2024-06-17 10:31:29 -04:00
parent 81d20fbf7a
commit 653d3969bb
4 changed files with 19 additions and 2 deletions
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12
src/test/regress/expected/jsonb_jsonpath.out
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@@ -2525,7 +2525,10 @@ select jsonb_path_query('null', '$.string()', silent => true);
(0 rows)
select jsonb_path_query('[]', '$.string()');
ERROR: jsonpath item method .string() can only be applied to a bool, string, numeric, or datetime value
jsonb_path_query
------------------
(0 rows)
select jsonb_path_query('[]', 'strict $.string()');
ERROR: jsonpath item method .string() can only be applied to a bool, string, numeric, or datetime value
select jsonb_path_query('{}', '$.string()');
@@ -2576,6 +2579,13 @@ select jsonb_path_query('1234', '$.string().type()');
"string"
(1 row)
select jsonb_path_query('[2, true]', '$.string()');
jsonb_path_query
------------------
"2"
"true"
(2 rows)
select jsonb_path_query('"2023-08-15 12:34:56 +5:30"', '$.timestamp().string()');
ERROR: cannot convert value from timestamptz to timestamp without time zone usage
HINT: Use *_tz() function for time zone support.