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
INSERT INTO table if a table exists in MySQL else implement CREATE TABLE and create the table
Here’s the syntax to check whether the table already exists using the CREATE TABLE IF NOT EXISTS −
create table if not exists yourTableName ( yourColumnName1 dataType, . . . . N ); insert into yourTableName values(yourValue1,.......N);
Let us first create a table −
mysql> create table if not exists DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentSubject varchar(100) ); Query OK, 0 rows affected (0.60 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(StudentSubject) values('Java');
Query OK, 1 row affected (0.24 sec)
mysql> insert into DemoTable(StudentSubject) values('MySQL');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(StudentSubject) values('C');
Query OK, 1 row affected (0.23 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----------+----------------+ | StudentId | StudentSubject | +-----------+----------------+ | 1 | Java | | 2 | MySQL | | 3 | C | +-----------+----------------+ 3 rows in set (0.00 sec)
Updated on: 26-Sep-2019
894 Views
Advertisements