Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
MySQL regular expression to update a table with column values including string, numbers and special characters
For this, use UPDATE command along with REGEXP. Let us first create a table −
mysql> create table DemoTable2023 -> ( -> StreetNumber varchar(100) -> ); Query OK, 0 rows affected (0.59 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable2023 values('7');
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable2023 values('1');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable2023 values('AUS-100');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable2023 values('US-101');
Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −
mysql> select *from DemoTable2023;
This will produce the following output −
+--------------+ | StreetNumber | +--------------+ | 7 | | 1 | | AUS-100 | | US-101 | +--------------+ 4 rows in set (0.00 sec)
Here is the query to update a table using a regular expression −
mysql> update DemoTable2023
-> set StreetNumber=concat('Street',StreetNumber)
-> where StreetNumber regexp'^[0-9]{1,2}$';
Query OK, 2 rows affected (0.19 sec)
Rows matched: 2 Changed: 2 Warnings: 0Let us check the table records once again −
mysql> select *from DemoTable2023;
This will produce the following output −
+--------------+ | StreetNumber | +--------------+ | Street7 | | Street1 | | AUS-100 | | US-101 | +--------------+ 4 rows in set (0.00 sec)
Updated on: 06-Apr-2020
528 Views
Advertisements