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Found 4378 Articles for MySQL
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
79 Views
To fetch day name, use DAYNAME() function in MySQL. Let us first create a table −mysql> create table DemoTable1954 ( ShippingDate date ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1954 values('2019-12-15'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1954 values('2018-04-11'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1954 values('2019-01-31'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1954 values('2016-10-01'); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
475 Views
Let us first create a table −mysql> create table DemoTable1953 ( StudentName varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1953 values('Chris'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1953 values(NULL); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1953 values('David'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1953 values(NULL); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * from DemoTable1953;This will produce the following output −+-------------+ | ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
88 Views
For this, use CASE statement. Let us first create a table −mysql> create table DemoTable1952 ( Marks int ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1952 values(35); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1952 values(65); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1952 values(55); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1952 values(39); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * from DemoTable1952;This will produce ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
617 Views
To split float value in two columns, the first column will have a value before decimal. The second column will have a value after decimal. For this, you can use SUBSTRING_INDEX() along with CAST(). Let us first create a table −mysql> create table DemoTable1951 ( Value1 varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1951 values('100.50'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1951 values('70.90'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1951 values('1000.55'); Query OK, 1 row affected ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
2K+ Views
Let us create a table −mysql> create table DemoTable1950 ( Amount float ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1950 values(45.60); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1950 values(101.78); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1950 values(75.90); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1950 values(89.45); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * from DemoTable1950;This will produce the following output −+--------+ | Amount ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
209 Views
To set NOT NULL attribute to an existing column, use ALTER TABLE command. Let us first create a table −mysql> create table DemoTable1949 ( UserId int, UserName varchar(20) ); Query OK, 0 rows affected (0.00 sec)Here is the query to set NOT NULL attribute to an existing column −mysql> alter table DemoTable1949 modify UserName varchar(20) not null; Query OK, 0 rows affected (0.00 sec) Records: 0 Duplicates: 0 Warnings: 0Let us check the description of table −mysql> desc DemoTable1949;This will produce the following output −+----------+-------------+------+-----+---------+-------+ | Field | Type | Null | ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
239 Views
To sort only numbers from alphanumeric string, use ORDER BY RIGHT(). Let us first create a table −mysql> create table DemoTable1948 ( StudentCode varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1948 values('121John_567'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1948 values('Adam_101'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1948 values('Bob_563'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1948 values('Sam_346'); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
1K+ Views
Let us first create a table −mysql> create table DemoTable1947 ( Id int, Name varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1947 values(101, 'Chris'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1947 values(102, 'David'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1947 values(103, 'Mike'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1947 values(104, 'Bob'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1947 values(105, 'Sam'); Query OK, 1 row affected (0.00 sec)Display ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
437 Views
Let us first create a table −mysql> create table DemoTable1946 ( ShippingDate date ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1946 values('2019-12-11'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1946 values('2018-12-11'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1946 values('2017-12-11'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1946 values('2019-04-22'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1946 values('2019-12-11'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1946 values('2015-12-11'); Query OK, 1 ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
5K+ Views
To insert records from multiple tables, use INSERT INTO SELECT statement. Here, we will insert records from 2 tables.Let us first create a table −mysql> create table DemoTable1943 ( Name varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1943 values('Chris'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1943 values('Robert'); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * from DemoTable1943;This will produce the following output −+--------+ | Name | +--------+ | Chris ... Read More