REGEXP_SUBSTR(description,'e.*e') : Wild Card « Regular Expressions « Oracle PL / SQL

1. Oracle PL / SQL
2. Regular Expressions
3. Wild Card

REGEXP_SUBSTR(description,'e.*e')

SQL> create table TestTable(
  2    ID                    VARCHAR2(4 BYTE)         NOT NULL,
  3    Description           VARCHAR2(30 BYTE)
  4  )
  5  /

Table created.

SQL>
SQL>
SQL> insert into TestTable (ID, Description) values('1','1234 5th Street');

1 row created.

SQL> insert into TestTable (ID, Description) values('2','1 Culloden Street');

1 row created.

SQL> insert into TestTable (ID, Description) values('3','1234 Road');

1 row created.

SQL> insert into TestTable (ID, Description) values('4','33 Thrid Road');

1 row created.

SQL> insert into TestTable (ID, Description) values('5','One than another');

1 row created.

SQL> insert into TestTable (ID, Description) values('6','2003 Movie');

1 row created.

SQL> insert into TestTable (ID, Description) values('7','Start With Letters');

1 row created.

SQL>
SQL> select * from TestTable;

ID   DESCRIPTION
---- ------------------------------
1    1234 5th Street
2    1 Culloden Street
3    1234 Road
4    33 Thrid Road
5    One than another
6    2003 Movie
7    Start With Letters

7 rows selected.

SQL>
SQL>
SQL> -- Note the greedy "+" finding one or more things between "e"s; it "stretches" the 
--letters between "e"s as far as possible. Note that the query returned "eenbrie" and not just "ee".
SQL>
SQL> SELECT description, REGEXP_SUBSTR(description,'e.*e') FROM testTable;

DESCRIPTION                    REGEXP_SUBSTR(DESCRIPTION,'E.*
------------------------------ ------------------------------
1234 5th Street                ee
1 Culloden Street              en Stree
1234 Road
33 Thrid Road
One than another               e than anothe
2003 Movie
Start With Letters             ette

7 rows selected.

SQL>
SQL>
SQL>
SQL> drop table TestTable;

Table dropped.

SQL>
SQL>
SQL>

           
       

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