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Found 4219 Articles for MySQLi
![Sharon Christine](https://www.tutorialspoint.com/assets/profiles/13517/profile/60_82215-1512649681.jpg)
67 Views
Let us first create a table −mysql> create table DemoTable -> ( -> AdmissionDate varchar(100) -> ); Query OK, 0 rows affected (0.66 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Wed, 19 Jun 2019 04:10:20'); Query OK, 1 row affected (0.22 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+---------------------------+ | AdmissionDate | +---------------------------+ | Wed, 19 Jun 2019 04:10:20 | +---------------------------+ 1 row in set (0.00 sec)Following is ... Read More
![Kumar Varma](https://www.tutorialspoint.com/assets/profiles/13883/profile/60_73481-1512711460.jpg)
100 Views
Let us first create a table −mysql> create table DemoTable -> ( -> Code varchar(100) -> ); Query OK, 0 rows affected (1.07 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('/101/102/106'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('/110/111/101'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('/111/114/201'); Query OK, 1 row affected (0.47 sec) mysql> insert into DemoTable values('/111/118'); Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce ... Read More
![Rama Giri](https://www.tutorialspoint.com/assets/profiles/13881/profile/60_68188-1512710896.jpg)
79 Views
Yes, we can use ADD and CHANGE with ALTER statement. Let us first create a table −mysql> create table DemoTable -> ( -> Name varchar(100), -> Age int -> ); Query OK, 0 rows affected (0.84 sec)Now check the description of table.mysql> desc DemoTable;OutputThis will produce the following output −+-------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+--------------+------+-----+---------+-------+ | Name | varchar(100) | YES | | NULL | | | Age | int(11) ... Read More
![Sharon Christine](https://www.tutorialspoint.com/assets/profiles/13517/profile/60_82215-1512649681.jpg)
980 Views
For this, you can use UPDATE and concatenate the new data with the old one to save the old data as well −update yourTableName set yourColumnName=concat(yourColumnName, ", yourValue");Let us first create a table −mysql> create table DemoTable -> ( -> CustomerName varchar(100) -> ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values('David'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('Sam'); Query OK, 1 row affected (0.14 sec)Display all records from ... Read More
![Kumar Varma](https://www.tutorialspoint.com/assets/profiles/13883/profile/60_73481-1512711460.jpg)
298 Views
Let us first create a table −mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(100), -> Age int -> ); Query OK, 0 rows affected (0.87 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Name, Age) values('John', 21); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(Name, Age) values('Carol', 22); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(Name, Age) values('David', 23); Query OK, 1 row affected (0.54 sec)Display all records from the table using select statement ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
394 Views
Use FIND_IN_SET for this. Let us first create a table −mysql> create table DemoTable -> ( -> ListOfValues text -> ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('10|20|30|40|50|60|100'); Query OK, 1 row affected (0.18 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+-----------------------+ | ListOfValues | +-----------------------+ | 10|20|30|40|50|60|100 | +-----------------------+ 1 row in set (0.00 sec)Following is the query to search between comma separated values within one ... Read More
![Rama Giri](https://www.tutorialspoint.com/assets/profiles/13881/profile/60_68188-1512710896.jpg)
1K+ Views
Use group_concat() function from MySQL to concatenate. Let us first create a table −mysql> create table DemoTable -> ( -> Subject varchar(10) -> ); Query OK, 0 rows affected (0.43 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('C'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('C++'); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable values('C++'); Query OK, 1 row affected (0.06 sec) mysql> insert into DemoTable values('MongoDB'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('MySQL'); Query ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
353 Views
To order by number of chars, use ORDER BY and LENGTH() method. Following is the syntax −select *from yourTableName order by LENGTH(yourColumnName) DESC;Let us first create a table −mysql− create table DemoTable -> ( -> Name varchar(100) -> ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Robert'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Bob'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
293 Views
To update an existing table, use UPDATE. With that, to set the current date, use the CURDATE() method −update yourTableName set yourCoumnName=CURDATE();Let us first create a table −mysql> create table DemoTable -> ( -> DueDate datetime -> ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-01-10') ; Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable values('2019-03-31'); Query OK, 1 row affected (0.18 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+---------------------+ | DueDate ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
595 Views
Use SUBSTRING_INDEX to select everything before @ in an email-id −select substring_index(yourColumnName, '@', 1) from yourTableName;Let us first create a table −mysql> create table DemoTable -> ( -> EmployeeMailId varchar(100) -> ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Larry123@gmail.com'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('987Sam@hotmail.com'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('123456David_98@gmail.com'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the ... Read More