Regexp_Replace returns the source_string with every occurrence of the pattern_to_find replaced with the replace_string : REGEXP_REPLACE « Regular Expressions Functions « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Regular Expressions Functions » REGEXP_REPLACE 
18. 4. 1. Regexp_Replace returns the source_string with every occurrence of the pattern_to_find replaced with the replace_string

The simplest format for this function is:

REGEXP_REPLACE (source_string, pattern_to_find, pattern_to_replace_by)

The general format for the REGEXP_REPLACE function with all the options is:

REGEXP_REPLACE (source_string, pattern_to_find,[pattern_to_replace_by, position, occurrence,match_parameter])

SQL> SELECT REGEXP_REPLACE('Mississippi', 'si', 'SI', 10'i')
  2  FROM dual;

REGEXP_REPL
-----------
MisSIsSIppi

SQL>
18. 4. REGEXP_REPLACE
18. 4. 1. Regexp_Replace returns the source_string with every occurrence of the pattern_to_find replaced with the replace_string
18. 4. 2. Regext_Replace
18. 4. 3. The Backslash as an Escape Character
18. 4. 4. REGEXP_REPLACE(x, pattern [, replace_string [, start [, occurrence [, match_option]]]]) searches x for pattern and replace it with replace_string
18. 4. 5. Convert a name in the form 'first middle last' into the 'last, middle first' format
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