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Articles by AmitDiwan
Page 718 of 840
Add records from corresponding duplicate values in another column with MySQL
For this, you can use the aggregate function SUM() along with the GROUP BY clause. Let us first create a table −mysql> create table DemoTable -> ( -> Name varchar(20), -> Value int -> ); Query OK, 0 rows affected (2.08 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', 50); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('David', 90); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Chris', 60); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('Bob', 100); Query ...
Read MoreUPDATE with logical AND operator in MySQL
For this, you can use AND operator with WHERE clause. Let us first create a table −mysql> create table DemoTable1616 -> ( -> StudentId int, -> StudentName varchar(20), -> StudentMarks int -> ); Query OK, 0 rows affected (0.44 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1616 values(101, 'Chris', 56); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable1616 values(102, 'Bob', 87); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable1616 values(103, 'David', 56); Query OK, 1 row affected (0.20 sec) ...
Read MoreHow to get the count of both present and absent students for a year in MySQL?
For this, you can use IF() along with aggregate function SUM(). Let us first create a table −mysql> create table DemoTable1617 -> ( -> Attendance varchar(20), -> CurrentYear int -> ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1617 values('Present', 2019); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable1617 values('Absent', 2019); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable1617 values('Absent', 2017); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable1617 values('Present', 2019); Query ...
Read MoreSelect total from a MySQL table based on month
For this, you can use GROUP BY MONTH(). Let us first create a table −mysql> create table DemoTable1628 -> ( -> PurchaseDate date, -> Amount int -> ); Query OK, 0 rows affected (1.55 sec)Insert some records in the table using insert command.mysql> insert into DemoTable1628 values('2019-01-10', 1500); Query OK, 1 row affected (0.68 sec) mysql> insert into DemoTable1628 values('2019-10-10', 2000); Query OK, 1 row affected (0.61 sec) mysql> insert into DemoTable1628 values('2019-10-24', 100); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable1628 values('2019-11-10', 500); Query OK, 1 row affected ...
Read MoreMySQL Order by a specific column x and display remaining values in ascending order
Let us first create a table −mysql> create table DemoTable -> ( -> MonthNumber int -> ); Query OK, 0 rows affected (1.68 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(1); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(9); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(6); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(8); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(5); ...
Read MoreDelete a specific record from a MySQL table by using AND in WHERE clause
MySQL AND is used in WHERE to fetch a record by filtering using multiple conditions. Let us first create a table−mysql> create table DemoTable -> ( -> Id int, -> Name varchar(20) -> ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(101, 'Chris'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(102, 'David'); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values(103, 'Bob'); Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement ...
Read MoreSort records with special characters like '2321/78/54-6'
To sort, use ORDER BY SUBSTRING(). Let us first create a table −mysql> create table DemoTable -> ( -> Value varchar(40) -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2321/78/54-6') -> ; Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('2321/78/54-8'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('2321/78/54-5'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('2321/78/54-9'); Query OK, 1 row affected (0.21 sec)Display all records from the table using select statement ...
Read MoreOrder VARCHAR records with string and numbers in MySQL
For this, use ORDER BY clause. Let us first create a table −mysql> create table DemoTable -> ( -> StudentCode varchar(20) -> ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('101J'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('100A'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('100B'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values('101S'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('103M'); Query OK, 1 row affected (0.15 ...
Read MoreGet number of users of different type in MySQL?
Let us first create a table −mysql> create table DemoTable -> ( -> UserName varchar(20), -> UserType ENUM('New User', 'Registered User') -> ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris', 'New User'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('David', 'New User'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values('Mike', 'Registered User'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('Sam', 'New User'); Query OK, 1 row affected (0.10 sec)Display all records ...
Read MoreRound records with numbers in MySQL
To round number, use MySQL ROUND(). Let us first create a table −mysql> create table DemoTable -> ( -> Amount DECIMAL(10, 4) -> ); Query OK, 0 rows affected (1.18 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100.578); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(1000.458); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(980.89); Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −mysql> select * from DemoTable;This will produce the following output−+-----------+ | Amount | ...
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