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To keep only first two characters and delete rest of the characters, use SUBSTRING().Let us first create a table −mysql> create table DemoTable743 (SubjectName varchar(100)); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable743 values('MySQL'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable743 values('Java'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable743 values('MongoDB'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable743 values('Python'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable743 values('Data Structure'); Query OK, 1 row affected (0.68 ... Read More
Let us first create a table −mysql> create table DemoTable742 (Value varchar(100)); Query OK, 0 rows affected (2.91 sec)Insert some records in the table using insert command −mysql> insert into DemoTable742 values('632535MIT'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable742 values('US%UK'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable742 values('56%78'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable742 values('%_1234'); Query OK, 1 row affected (0.09 sec)Display all records from the table using select statement −mysql> select *from DemoTable742;This will produce the following output -+-----------+ | Value | ... Read More
Let us first create a table −mysql> create table DemoTable741 (Number int); Query OK, 0 rows affected (0.61 sec)Insert some records in the table using insert command −mysql> insert into DemoTable741 values(70); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable741 values(55); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable741 values(89); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable741 values(79); Query OK, 1 row affected (0.35 sec) mysql> insert into DemoTable741 values(34); Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −mysql> select *from DemoTable741;This will ... Read More
Use LIKE to find records with double quotes. Following is the syntax −select *from yourTableName where yourColumnName LIKE '%"%';Let us first create a table −mysql> create table DemoTable740 (Value varchar(100)); Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert command −mysql> insert into DemoTable740 values("\""); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable740 values("\"John"); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable740 values("Sam"); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable740;This will produce the following output -+-------+ | ... Read More
Let us first create a table −mysql> create table DemoTable739 (Price int); Query OK, 0 rows affected (0.65 sec)Insert some records in the table using insert command −mysql> insert into DemoTable739 values(100); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable739 values(50); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable739 values(1200); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable739 values(500); Query OK, 1 row affected (0.37 sec) mysql> insert into DemoTable739 values(800); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select *from DemoTable739;This will ... Read More
Let us first create a table −mysql> create table DemoTable(EmployeeCode varchar(100)); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('EMPLOYEE:100 John Smith'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('EMPLOYEE:16537 Chris Brown'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('EMPLOYEE:100 David Miller'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('EMPLOYEE:100 23432 David Miller'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql>; select *from DemoTable;This will produce the following output ... Read More
To find strings containing a-z, A-Z and 0-9, use BINARY REGEXP along with AND operator.Let us first create a table −mysql> create table DemoTable738 (UserId varchar(100)); Query OK, 0 rows affected (0.81 sec)Insert some records in the table using insert command −mysql> insert into DemoTable738 values('John'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable738 values('sAm456'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable738 values('98Carol'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable738 values('67david'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable738 values('69MIKE'); Query OK, 1 row affected (0.18 ... Read More
You are provided with a string str with some length n. Print the position of every element of the string so it can form a palindrome, else print a message “No palindrome” on screen.What is palindrome?Palindrome is a word, sequence of characters which reads same from the reverse or backward as from the forward manner, like MADAM, racecar.To find a sequence or a word is palindrome we generally store the reverse of a word in a separate string and compare both if they are same then the given word or sequence is palindrome. But in this question we have to ... Read More
To create an empty view in MySQL, following is the syntax −create or replace view yourViewName as select yourValue AS yourColumnName, yourValue AS yourColumnName2, . . N from dual where false;Let us implement the above syntax in order to create an empty view in MySQL −mysql> create or replace view empty_view as select "John Smith" AS ClientName, "US" AS ClientCountryName, false AS isMarried from dual where false; Query OK, 0 rows affected (0.20 sec)Let us check the description of the view −mysql> desc empty_view;This will produce the following output -+-------------------+-------------+------+-----+---------+-------+ | Field ... Read More
With the DEFAULT CURRENT_TIMESTAMP and ON UPDATE CURRENT_TIMESTAMP, a column has the current timestamp for its default value and is automatically updated to the current timestamp.Let us see an example and create a table −mysql> create table DemoTable737 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100), StudentAdmissiondate datetime ); Query OK, 0 rows affected (0.68 sec)Following is the query to for CURRENT_TIMESTAMP and ON UPDATE CURRENT_TIMESTAMP in MySQL −mysql> alter table DemoTable737 modify column StudentAdmissiondate timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP; Query OK, 0 rows affected (2.20 sec) Records: 0 Duplicates: 0 Warnings: 0Let ... Read More