- 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
STR_TO_DATE as column, but column not found?
You can use having clause. Let us first create a table −
mysql> create table DemoTable -> ( -> AdmissionDate varchar(100) -> ); Query OK, 0 rows affected (0.55 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('10/12/2017'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('01/11/2018'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('31/01/2019'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('09/06/2019'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('19/04/2019'); Query OK, 1 row affected (0.23 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
Output
+---------------+ | AdmissionDate | +---------------+ | 10/12/2017 | | 01/11/2018 | | 31/01/2019 | | 09/06/2019 | | 19/04/2019 | +---------------+ 5 rows in set (0.00 sec)
Following is the query to STR_TO_DATE as column −
mysql> select STR_TO_DATE(AdmissionDate, '%d/%m/%Y') as newDate from DemoTable -> having newDate >= '2019-01-01';
Output
+------------+ | newDate | +------------+ | 2019-01-31 | | 2019-06-09 | | 2019-04-19 | +------------+ 3 rows in set (0.00 sec)
Advertisements