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
How to update column values with date records and set 1 for corresponding records before the current date in SQL
Let’s say the current date is 2019-08-20. Now for our example, we will create a table −
mysql> create table DemoTable ( ProductStatus tinyint(1), ProductExpiryDate date ); Query OK, 0 rows affected (1.03 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(0,'2019-06-12'); Query OK, 1 row affected (0.43 sec) mysql> insert into DemoTable values(0,'2019-10-11'); Query OK, 1 row affected (0.38 sec) mysql> insert into DemoTable values(0,'2018-07-24'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(0,'2018-09-05'); Query OK, 1 row affected (0.27 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+---------------+-------------------+ | ProductStatus | ProductExpiryDate | +---------------+-------------------+ | 0 | 2019-06-12 | | 0 | 2019-10-11 | | 0 | 2018-07-24 | | 0 | 2018-09-05 | +---------------+-------------------+ 4 rows in set (0.00 sec)
Following is the query to set value 1 for records before the current date
mysql> update DemoTable set ProductStatus=1 where ProductExpiryDate <=CURDATE(); Query OK, 3 rows affected (0.95 sec) Rows matched : 3 Changed : 3 Warnings : 0
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+---------------+-------------------+ | ProductStatus | ProductExpiryDate | +---------------+-------------------+ | 1 | 2019-06-12 | | 0 | 2019-10-11 | | 1 | 2018-07-24 | | 1 | 2018-09-05 | +---------------+-------------------+ 4 rows in set (0.00 sec)
Updated on: 07-Oct-2019
247 Views
Advertisements