database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-10-28 11:55:03 +03:00
Code Activity

I made the patch that implements regexp_replace again.

Browse Source 
The specification of this function is as follows.

regexp_replace(source text, pattern text, replacement text, [flags
text])
returns text

Replace string that matches to regular expression in source text to
replacement text.

 - pattern is regular expression pattern.
 - replacement is replace string that can use '\1'-'\9', and '\&'.
    '\1'-'\9': back reference to the n'th subexpression.
    '\&'     : entire matched string.
 - flags can use the following values:
    g: global (replace all)
    i: ignore case
    When the flags is not specified, case sensitive, replace the first
    instance only.

Atsushi Ogawa
This commit is contained in:
Bruce Momjian
2005-07-10 04:54:33 +00:00
parent 73e2431817
commit 75a64eeb4b
10 changed files with 418 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/test/regress/sql/strings.sql
View File

@@ -80,6 +80,13 @@ SELECT SUBSTRING('abcdefg' FROM 'c.e') AS "cde";
-- With a parenthesized subexpression, return only what matches the subexpr
SELECT SUBSTRING('abcdefg' FROM 'b(.*)f') AS "cde";
-- PostgreSQL extension to allow using back reference in replace string;
SELECT regexp_replace('1112223333', '(\\d{3})(\\d{3})(\\d{4})', '(\\1) \\2-\\3');
SELECT regexp_replace('AAA BBB CCC ', '\\s+', ' ', 'g');
SELECT regexp_replace('AAA', '^|$', 'Z', 'g');
SELECT regexp_replace('AAA aaa', 'A+', 'Z', 'gi');
-- invalid option of REGEXP_REPLACE
SELECT regexp_replace('AAA aaa', 'A+', 'Z', 'z');
-- E021-11 position expression
SELECT POSITION('4' IN '1234567890') = '4' AS "4";