MySQL insert into Statement Exercises: Insert rows into the table countries in which the value of country_id column will be unique and auto incremented
MySQL insert into Statement: Exercise-10 with Solution
10. Write a SQL statement to insert rows into the table countries in which the value of country_id column will be unique and auto incremented.
Create the table countries. CREATE TABLE IF NOT EXISTS countries ( COUNTRY_ID integer NOT NULL AUTO_INCREMENT PRIMARY KEY, COUNTRY_NAME varchar(40) NOT NULL, REGION_ID integer NOT NULL );
Sample Solution:
INSERT INTO countries(COUNTRY_NAME,REGION_ID) VALUES('India',185);
Let execute the above code in MySQL 5.6 command prompt.
Here is the structure of the table:
mysql> SELECT * FROM countries; +------------+--------------+-----------+ | COUNTRY_ID | COUNTRY_NAME | REGION_ID | +------------+--------------+-----------+ | 1 | India | 185 | +------------+--------------+-----------+ 1 row in set (0.00 sec)
INSERT INTO countries(COUNTRY_NAME,REGION_ID) VALUES('Japan',102);
Let execute the above code in MySQL 5.6 command prompt.
Here is the structure of the table:
mysql> SELECT * FROM countries; +------------+--------------+-----------+ | COUNTRY_ID | COUNTRY_NAME | REGION_ID | +------------+--------------+-----------+ | 1 | India | 185 | | 2 | Japan | 102 | +------------+--------------+-----------+ 2 rows in set (0.03 sec)
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous:Write a SQL statement to insert a record into the table countries to ensure that, a country_id and region_id combination will be entered once in the table.
Next:Write a SQL statement to insert records into the table countries to ensure that the country_id column will not contain any duplicate data and this will be automatically incremented and the column country_name will be filled up by 'N/A' if no value assigned for that column.
What is the difficulty level of this exercise?
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework