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Adjust regex for test with opening parenthesis in character classes

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As written, the test was throwing an error because of an unbalanced
parenthesis.  The regex used in the test is adjusted to not fail and to
test the case of an opening parenthesis in a character class after some
nested square brackets.

Oversight in d46911e584d4.

Discussion: https://postgr.es/m/16ab039d1af455652bdf4173402ddda145f2c73b.camel@cybertec.at
This commit is contained in:
Michael Paquier 2025-05-28 09:43:46 +09:00
parent e9e535d611
commit 52d08620e4
2 changed files with 8 additions and 3 deletions
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9
src/test/regress/expected/strings.out
View File

@ -631,8 +631,13 @@ EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '$[$[:alnum:]$]$'
(2 rows)
-- Opening parenthesis "("
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '([([:alnum:](](';
ERROR: invalid regular expression: parentheses () not balanced
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '()[([:alnum:](]()';
QUERY PLAN
------------------------------------------------------
Seq Scan on text_tbl
Filter: (f1 ~ '^(?:(?:)[([:alnum:](](?:))$'::text)
(2 rows)
-- Caret "^"
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '^[^[:alnum:]^[^^][[^^]][\^][[\^]]\^]^';
QUERY PLAN

2
src/test/regress/sql/strings.sql
View File

@ -204,7 +204,7 @@ EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '.[.[:alnum:].].'
-- Dollar "$"
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '$[$[:alnum:]$]$';
-- Opening parenthesis "("
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '([([:alnum:](](';
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '()[([:alnum:](]()';
-- Caret "^"
EXPLAIN (COSTS OFF) SELECT * FROM TEXT_TBL WHERE f1 SIMILAR TO '^[^[:alnum:]^[^^][[^^]][\^][[\^]]\^]^';
-- Closing square bracket "]" at the beginning of character class