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For this, use UPDATE and REPLACE() in MySQL. Let us first create a table −mysql> create table DemoTable -> ( -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentName varchar(100), -> StudentCountryName varchar(100) -> ); Query OK, 0 rows affected (0.67 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(StudentName, StudentCountryName) values('John', 'US'); Query OK, 1 row affected (0.15 sec)Display all records from the table using select statement −mysql select *from DemoTable;OutputThis will produce the following output −+-----------+-------------+--------------------+ | StudentId | StudentName | StudentCountryName | +-----------+-------------+--------------------+ | ... Read More
To set a string with hyphen and numbers, you need to use single quotes. For example, 'Customer-1234-899', 'Customer-9383-901', etc.Let us first create a table −mysql> create table DemoTable -> ( -> CustomerId varchar(100) -> ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Customer-1234-899'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Customer-8373-900'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('Customer-9383-901'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select *from DemoTableOutputThis ... Read More
Use the SUBSTR() method to extract the middle part of column values surrounded with hyphens, for example, “11-84848-11”.Let us first create a table −mysql> create table DemoTable -> ( -> Number varchar(100), -> Number1 varchar(100) -> ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Number) values('11-84848-11'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(Number) values('22-99999-22'); Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+-------------+---------+ | Number ... Read More
Use the CONV() method to convert hex string to number −select CONV(yourColumnName, 16, 10) AS anyAliasName from yourTableName;Let us first create a table −mysql> create table DemoTable -> ( -> HexString varchar(100) -> ); Query OK, 0 rows affected (0.82 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('A'); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable values('F'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('B'); Query OK, 1 row affected (0.55 sec) mysql> insert into DemoTable values('ABC'); Query OK, 1 row affected (0.11 sec)Display ... Read More
Use the LOCATE() and SUBSTRING() method for this in MySQL. Let us first create a table −mysql> create table DemoTable -> ( -> Title text -> ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Introduction To Java'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Introduction - To MySQL'); Query OK, 1 row affected (0.16 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+-------------------------+ | Title ... Read More
Use the BINARY keyword to force REGEXP to match the string as a binary string. We will see the difference here.Let us first create a table −mysql> create table DemoTable -> ( -> Name varchar(100) -> ); Query OK, 0 rows affected (0.46 sec)Insert some records in the table using insert command. We have names here with different cases −mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('JOHN'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('john'); Query OK, 1 row affected (0.16 sec) mysql> insert ... Read More
Use the SUBSTR() method to get the substring of a column.Let us first create a table −mysql> create table DemoTable -> ( -> Title text -> ); Query OK, 0 rows affected (0.74 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('This is a MySQL Database'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Java is an Object Oriented Programming Language'); Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −mysql> select *from DemoTable ;OutputThis will produce the following output −+-------------------------------------------------+ | Title ... Read More
Let us first create a table −mysql> create table DemoTable -> ( -> StudentId varchar(100) -> ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('STU-090'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('STU-123'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('STU-678'); Query OK, 1 row affected (0.29 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+-----------+ | StudentId | +-----------+ | STU-090 | ... Read More
For this, you can use ORDER BY clause. Let us first create a table −mysql> create table DemoTable -> ( -> Num1 int, -> Num2 int -> ); Query OK, 0 rows affected (0.61 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(60, 249); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values(59, 250); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable;OutputThis will produce the following output −+------+------+ | Num1 | Num2 | +------+------+ | 60 | 249 ... Read More
For this, use ORDER BY MAX(). Let us first create a table −mysql> create table DemoTable -> ( -> Id int, -> Name varchar(100) -> ); Query OK, 0 rows affected (0.81 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, 'John'); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values(10, 'John'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(20, 'Sam'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(20, 'Sam'); Query OK, 1 row affected (0.11 sec) ... Read More