MySQL Articles - Page 73 of 439

For this, use LEFT in MySQL. Let us first create a table −mysql> create table DemoTable    -> (    -> Title text    -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Java database connectivity to MySQL database'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Python with django framework'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('C with data structure and algorithm'); Query OK, 1 row affected (0.33 sec)Display all records from the table using select statement −mysql> select ... Read More

Use the MySQL LIKE operator to match even when punctuation is present. Let us first create a table−mysql> create table DemoTable    -> (    -> Comments varchar(20)    -> ); Query OK, 0 rows affected (1.10 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Good, Morning'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('Nice'); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values('good, bye!'); Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following ... Read More

You need to use intvalue=1. The statement intvalue=’1’ is internally converted to cast(‘1’ as int) by MySQL.Let us first create a table −mysql> create table DemoTable1566    -> (    -> intvalue int    -> ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1566 values(1); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable1566 values(55); Query OK, 1 row affected (0.08 sec) mysql> insert into DemoTable1566 values(75); Query OK, 1 row affected (0.32 sec) mysql> insert into DemoTable1566 values(90); Query OK, 1 row affected (0.19 sec)Display all ... Read More

For this, you can use STR_TO_DATE(). Let us first create a table −mysql> create table DemoTable1565    -> (    -> ArrivalDatetime varchar(40)    -> ); Query OK, 0 rows affected (0.82 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1565 values('10/01/2019 21:29:35'); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable1565 values('10/13/2019 4:56:00'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable1565 values('10/13/2018 12:40:46'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable1565 values('10/13/2019 21:30:00'); Query OK, 1 row affected (0.58 sec)Display all records from the table using select ... Read More

For this, you can use the CASE statement. Let us first create a table−mysql> create table DemoTable    -> (    -> Name varchar(20),    -> Marks1 int,    -> Marks2 int    -> ); Query OK, 0 rows affected (0.72 sec)Insert some records in the table using insert command−mysql> insert into DemoTable values('Chris', 45, null); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('David', null, 78); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('Bob', 67, 98); Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −mysql> ... Read More

For this, use MySQL FIND_IN_SET(). Let us first create a table −mysql> create table DemoTable1563    -> (    -> StudentId int,    -> StudentName varchar(20)    -> ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1563 values(1001, 'Chris'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable1563 values(1010, 'Bob'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable1563 values(1005, 'Chris'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable1563 values(1015, 'David'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable1563 ... Read More

To sort from max to min value, use ORDER BY length(). Let us first create a table −mysql> create table DemoTable    -> (    -> Price varchar(20)    -> ); Query OK, 0 rows affected (0.92 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('80'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('800'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('108'); Query OK, 1 row affected (0.50 sec) mysql> insert into DemoTable values('765'); Query OK, 1 row affected (0.14 sec)Display all records from the table using ... Read More

Do not prefix table name with field name like user_name. Instead, use user or username.If you prefix table name, then there may be a chance of ambiguity, so avoid prefixing table name.Let us first create a table −mysql> create table user    -> (    -> username varchar(20),    -> password varchar(20)    -> ); Query OK, 0 rows affected (0.66 sec)Insert some records in the table using insert command −mysql> insert into user values('John', 'J_635'); Query OK, 1 row affected (0.34 sec) mysql> insert into user values('Carol', 'Carol2212'); Query OK, 1 row affected (0.16 sec) mysql> insert into user ... Read More

For this, use MySQL MONTH() and YEAR() methods. Let us first create a table −mysql> create table DemoTable1562    -> (    -> VoucherValue int,    -> RechargeDate date    -> ); Query OK, 0 rows affected (1.40 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1562 values(149, '2019-10-21'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable1562 values(199, '2019-10-13'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable1562 values(399, '2018-10-13'); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable1562 values(450, '2019-10-13'); Query OK, 1 row affected (0.20 sec)Display all ... Read More

For this, you can use a sub query along with MIN(). Let us first create a table−mysql> create table DemoTable    -> (    -> Name varchar(20),    -> Score int    -> ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John', 56); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('John', 45); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values('John', 58); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('Chris', 43); Query OK, 1 row affected (0.15 ... Read More