For this, use FLOOR() function. Here, we will be fetching records like 12.00, 35.00, etc. from a list with records like 5.23, 8.76, 12.00, 22.68, etc. Let us first create a table −mysql> create table DemoTable (    Value DECIMAL(4, 2) ); Query OK, 0 rows affected (0.53 sec)Insert some ... Read More

Let us first create a table −mysql> create table DemoTable (    Marks int ); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(65); Query OK, 1 ... Read More

Use DELETE for this. Let us first create a table −mysql> create table DemoTable (    Name varchar(40),    Score1 int ,    Score2 int ); Query OK, 0 rows affected (2.71 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John', 56, 76); Query OK, ... Read More

Let’s say the current date is 2019-09-06. For our example, we will first create a table −mysql> create table DemoTable (    AdmissionDate date ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-01-08'); Query OK, 1 row affected ... Read More

Let us first create a table −mysql> create table DemoTable (    Code varchar(100) ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('8565-9848-7474'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('9994-6464-8737'); Query OK, 1 ... Read More

To convert, use JSON.stringify(). Following is the code to convert MySQL DATETIME value to JSON format in JavaScript − var mySQLDateTime = new Date("Fri Sep 06 2019 22 −54 −48 "); var yearValue = mySQLDateTime.getFullYear(); var dateValue = mySQLDateTime.getDate(); var monthValue=mySQLDateTime.getMonth(); var hour=mySQLDateTime.getHours(); var minutes=mySQLDateTime.getMinutes(); var second=mySQLDateTime.getSeconds(); jsonObject={"year" −yearValue, "month" ... Read More

For specific month, use MONTH() and for year, use YEAR() method. Let us first create a table −mysql> create table DemoTable (    StudentName varchar(40),    StudentAdmissionDate date ); Query OK, 0 rows affected (0.67 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', '2019-01-21'); ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    EmployeeSalary int ); Query OK, 0 rows affected (1.68 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(EmployeeSalary) values(12000); Query OK, 1 row affected (0.24 sec) ... Read More

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 ... Read More

Use GROUP BY to group records, whereas SUM() function is used to add. Let us first create a table −mysql> create table DemoTable (    Name varchar(40),    Subject varchar(40),    Marks int ); Query OK, 0 rows affected (2.89 sec)Insert some records in the table using insert command −mysql> ... Read More