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Found 6702 Articles for Database
304 Views
To sum based on field values, use aggregate function SUM() along with CASE statement. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Price int, isValidCustomer boolean, FinalPrice int ); Query OK, 0 rows affected (0.23 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Price, isValidCustomer, FinalPrice) values(20, false, 40); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable(Price, isValidCustomer, FinalPrice) values(45, true, 10); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(Price, isValidCustomer, FinalPrice) ... Read More
450 Views
To replace apostrophe, you can use replace(). Following is the syntax −update yourTableName set yourColumnName=replace(yourColumnName, '\'', '');Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Sentence varchar(100) ); Query OK, 0 rows affected (0.17 sec)Insert some records in the table using insert command. Apostrophe is added for the sentence −mysql> insert into DemoTable(Sentence) values('Chris\'s Father'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable(Sentence) values('Larry\'s Mother'); Query OK, 1 row affected (0.06 sec)Display all records from the table using select statement −mysql> select *from ... Read More
72 Views
To order string as a number, use CAST(). Following is the syntax −select *from yourTableName ORDER BY CAST(yourColumnName AS SIGNED) DESC;Let us first create a table −mysql> create table DemoTable ( Id varchar(100) ); Query OK, 0 rows affected (0.18 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('3'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values('20'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values('34'); Query OK, 1 row affected (0.06 sec) mysql> insert into DemoTable values('21'); Query OK, 1 row ... Read More
193 Views
You need to use OR condition along with WHERE clause. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, MonthNumber int, YearNumber int ); Query OK, 0 rows affected (0.22 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(MonthNumber, YearNumber) values(11, 2018); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(MonthNumber, YearNumber) values(3, 2019); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(MonthNumber, YearNumber) values(12, 2018); Query OK, 1 row affected (0.08 sec) mysql> insert ... Read More
103 Views
You can use ORDER BY RIGHT() for this. Let us first create a table −mysql> create table DemoTable ( UserId varchar(100) ); Query OK, 0 rows affected (0.33 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('User1234'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values('User9874'); Query OK, 1 row affected (0.06 sec) mysql> insert into DemoTable values('User9994'); Query OK, 1 row affected (0.04 sec) mysql> insert into DemoTable values('User1211'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('User1012'); Query OK, 1 ... Read More
164 Views
The SOUNDEX() returns a soundex string. Two strings that sound almost the same should have identical soundex stringsTo query soundex() in MySQL, you can use the below syntax −select *from yourTableName where soundex(yourValue)=soundex(yourColumnName);Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, FirstName varchar(20), LastName varchar(20) ); Query OK, 0 rows affected (0.28 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(FirstName, LastName) values('Adam', 'Smith'); Query OK, 1 row affected (0.04 sec) mysql> insert into DemoTable(FirstName, LastName) values('David', 'Miller'); Query OK, 1 ... Read More
102 Views
You can use CONCAT() function for this. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Value1 varchar(10), Value2 varchar(10) ); Query OK, 0 rows affected (0.21 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Value1, Value2) values('10', '345'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable(Value1, Value2) values('14', '789'); Query OK, 1 row affected (0.06 sec) mysql> insert into DemoTable(Value1, Value2) values('18', '234'); Query OK, 1 row affected (0.13 sec)Display all records from the table using ... Read More
144 Views
You can use ORDER BY for this. Let us first create a table −mysql> create table DemoTable ( Value int ); Query OK, 0 rows affected (0.20 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values(8); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(18); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values(11); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values(9); Query OK, 1 row ... Read More
592 Views
You can use aggregate function SUM() for this. Let us first create a table −mysql> create table DemoTable ( CustomerId int NOT NULL AUTO_INCREMENT PRIMARY KEY, CustomerProductName varchar(100), CustomerProductQuantity int, CustomerPrice int ); Query OK, 0 rows affected (0.17 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(CustomerProductName, CustomerProductQuantity, CustomerPrice) values('Product-1', 5, 400); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(CustomerProductName, CustomerProductQuantity, CustomerPrice) values('Product-2', 3, 100); Query OK, 1 row affected (0.06 sec) mysql> insert into DemoTable(CustomerProductName, CustomerProductQuantity, CustomerPrice) values('Product-1', 2, 300); Query OK, 1 ... Read More
2K+ Views
To search exact word from string, use the below syntax −select *from yourTableName where yourColumnName regexp '(^|[[:space:]])yourWord([[:space:]]|$)';Let us first create a table −mysql> create table DemoTable ( Title text ); Query OK, 0 rows affected (0.23 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('This is the Introduction to Java'); Query OK, 1 row affected (0.05 sec) mysql> insert into DemoTable values('This is the Introduction to MongoDB'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable values('This is the Introduction to MySQL'); Query OK, 1 row affected (0.06 ... Read More