Found 4219 Articles for MySQLi

MySQL query to convert a string into a month (Number)?

George John
Updated on 30-Jul-2019 22:30:26

172 Views

Use the str_to_date() method −select month(str_to_date(yourColumnName, '%b')) from yourTableName;Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    MonthName varchar(100)    ); Query OK, 0 rows affected (0.76 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(MonthName) values('Jan'); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable(MonthName) values('Mar'); Query OK, 1 row affected (0.13 sec) Display all records from the table using select statement: mysql> select *from DemoTable;Output+----+-----------+ | Id | MonthName | +----+-----------+ | 1 | Jan ... Read More

MySQL query to convert a string like “1h 15 min” into 75 minutes?

Chandu yadav
Updated on 30-Jul-2019 22:30:26

105 Views

You can use str_to_date() for this conversion. Let us first create a table −mysql> create table DemoTable    (    stringDate varchar(100)    ); Query OK, 0 rows affected (0.86 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('1h 15 min'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values('2h 30 min'); Query OK, 1 row affected (0.21 sec)Display all records from the table using select statement −mysql> select *from DemoTable;Output+------------+ | stringDate | +------------+ | 1h 15 min | | 2h 30 min | +------------+ 2 rows in set ... Read More

Can we use {} while creating a MySQL table?

Arjun Thakur
Updated on 30-Jul-2019 22:30:26

115 Views

No, you need to use open and close parenthesis like this ( ) while creating a table. Use the below syntax −CREATE TABLE IF NOT EXISTS yourTableName (    yourColumnName1 dataType1,    .    .    .    .    .    N );Let us first create a table −mysql> CREATE TABLE IF NOT EXISTS DemoTable    (    CustomerId int,    CustomerName varchar(20),    CustomerAge int    ,    PRIMARY KEY(CustomerId)    ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(1, 'Chris', 25); Query OK, 1 row ... Read More

Get rows with GROUP BY in MySQL?

Ankith Reddy
Updated on 30-Jul-2019 22:30:26

171 Views

Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Subject varchar(20),    Price int    ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Subject, Price) values('MySQL', 456); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(Subject, Price) values('MySQL', 456); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(Subject, Price) values('MongoDB', 56); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(Subject, Price) values('MongoDB', 60); Query OK, 1 row affected (0.13 sec) mysql> ... Read More

Retrieve from MySQL only if it contains two hyphen symbols?

Chandu yadav
Updated on 30-Jul-2019 22:30:26

451 Views

For this, use the LIKE operator. Let us first create a table:mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Password varchar(100)    ); Query OK, 0 rows affected (1.27 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Password) values('John@--123'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable(Password) values('---Carol234'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable(Password) values('--David987'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(Password) values('Mike----53443'); Query OK, 1 row affected (0.30 sec)Display all records from the table using select ... Read More

MySQL query to fetch date with year and month?

Chandu yadav
Updated on 30-Jul-2019 22:30:26

280 Views

For year and month date fetching, you can use YEAR() and MONTH() function in MySQL. Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    ShippingDate datetime    ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(ShippingDate) values('2019-01-31'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(ShippingDate) values('2018-12-01'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable(ShippingDate) values('2019-06-02'); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable(ShippingDate) values('2019-11-18'); Query OK, 1 row ... Read More

How to select a row where one of several columns equals a certain value in MySQL?

Arjun Thakur
Updated on 30-Jul-2019 22:30:26

330 Views

For this, you can use multiple OR. Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FirstName varchar(10),    LastName varchar(10),    Age int,    CountryName varchar(10)    ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(FirstName, LastName, Age, CountryName) values('John', 'Smith', 21, 'US'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(FirstName, LastName, Age, CountryName) values('Carol', 'Taylor', 22, 'AUS'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(FirstName, LastName, Age, CountryName) values('David', ... Read More

Get the count of the most frequently occurring values in MySQL?

Ankith Reddy
Updated on 30-Jul-2019 22:30:26

1K+ Views

For this, use the aggregate function COUNT() along with GROUP BY. Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Value int    ); Query OK, 0 rows affected (0.74 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Value) values(976); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(Value) values(67); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(Value) values(67); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable(Value) values(1); Query OK, 1 row affected (0.27 sec) mysql> ... Read More

MySQL query to get current datetime and only current date

George John
Updated on 30-Jul-2019 22:30:26

294 Views

The query SELECT NOW() gives the current date as well as current time. If you want only current date, use only CURDATE(). Following is the syntax for datetime −SELECT NOW();The syntax for only date.SELECT CURDATE();Let us now implement the above syntax −Case 1 : If you want both current date and time −mysql> SELECT NOW();Output+-----------------------+ | NOW() | +-----------------------+ | 2019-06-02 15 :30 :39 | +-----------------------+ 1 row in set (0.00 sec)Case 2 : If you want the current date only −mysql> SELECT CURDATE();Output+------------+ | CURDATE() | +------------+ | 2019-06-02 | +------------+ 1 row in set (0.00 sec)

Add two weeks to a date in MySQL?

Chandu yadav
Updated on 30-Jul-2019 22:30:26

626 Views

To add two weeks to a date in MySQL, use DATE_ADD() −insert into yourTableName(yourColumnName) values(date_add(now(), interval 2 week));Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    ShippingDate datetime    ); Query OK, 0 rows affected (0.62 sec)Following is the query to get the current date −mysql> select now(); +-----------------------+ | now() | +-----------------------+ | 2019-06-02 10 :36 :49 | +-----------------------+ 1 row in set (0.00 sec)Insert some records in the table using ... Read More

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