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I made the patch that implements regexp_replace again.

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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
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22
doc/src/sgml/func.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.263 2005/07/06 19:02:52 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.264 2005/07/10 04:54:30 momjian Exp $
PostgreSQL documentation
-->
@ -1256,6 +1256,26 @@ PostgreSQL documentation
<entry><literal>'O''Reilly'</literal></entry>
</row>
<row>
<entry><literal><function>regexp_replace</function>(<parameter>source</parameter> <type>text</type>,
<parameter>pattern</parameter> <type>text</type>,
<parameter>replacement</parameter> <type>text</type>
<optional>, <parameter>flags</parameter> <type>text</type></optional>)</literal></entry>
<entry><type>text</type></entry>
<entry>Replace string that matches the regular expression
<parameter>pattern</parameter> in <parameter>source</parameter> to
<parameter>replacement</parameter>.
<parameter>replacement</parameter> can use <literal>\1</>-<literal>\9</> and <literal>\&amp;</>.
<literal>\1</>-<literal>\9</> is a back reference to the n'th subexpression, and
<literal>\&amp;</> is the entire matched string.
<parameter>flags</parameter> can use <literal>g</>(global) and <literal>i</>(ignore case).
When flags is not specified, case sensitive matching is used, and it replaces
only the instance.
</entry>
<entry><literal>regexp_replace('1112223333', '(\\d{3})(\\d{3})(\\d{4})', '(\\1) \\2-\\3')</literal></entry>
<entry><literal>(111) 222-3333</literal></entry>
</row>
<row>
<entry><literal><function>repeat</function>(<parameter>string</parameter> <type>text</type>, <parameter>number</parameter> <type>integer</type>)</literal></entry>
<entry><type>text</type></entry>