Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles by karthikeya Boyini
Page 123 of 143
Split a column after hyphen in MySQL and display the remaining value?
To split a column after hyphen, use the SUBSTRING_INDEX() method −select substring_index(yourColumnName, '-', -1) AS anyAliasName from yourTableName;Let us first create a table −mysql> create table DemoTable -> ( -> StreetName text -> ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Paris Hill St.-CA-83745646') ; Query OK, 1 row affected (0.32 sec) mysql> insert into DemoTable values('502 South Armstrong Street-9948443'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select *from ...
Read MoreHow to cut part of a string with a MySQL query?
For this, use substring_index() function from MySQL. Let us first create a table −mysql> create table DemoTable -> ( -> StudentId varchar(100) -> ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('STU-1011'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('STU-95968686'); Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+--------------+ | StudentId | +--------------+ | STU-1011 ...
Read MoreHow to extract the area codes from a phone number with MySQL?
Let’s say we have a list of phone numbers and from that we want to get the area codes. These area codes are for example, the first 3 digits of the phone number. Use LEFT() function from MySQL for this.Let us first create a table −mysql> create table DemoTable -> ( -> AreaCodes varchar(100) -> ); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command. Here, let’s say we have included the phone numbers −mysql> insert into DemoTable values('90387568976') ; Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('90389097878' ; ...
Read MoreBest data type for storing large strings in MySQL?
You can use text data type to store large strings. Following is the syntax −CREATE TABLE yourTableName ( yourColumnName text, . . N );Let us first create a table −mysql> create table DemoTable -> ( -> MyStringValue text -> ); Query OK, 0 rows affected (0.67 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('This is a text data type to store large string'); Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −mysql> select *from ...
Read MoreC++ Program to Find Second Smallest of n Elements with Given Complexity Constraint
This is a C++ program to find Second Smallest of n elements with given complexity constraint.AlgorithmBegin function SecondSmallest() : /* Arguments to this function are: A pointer array a. Number of elements n */ // Body of the function: A variable s1 is declared as to keep track of smallest number. A variable s2 is declared as to keep track of second smallest number. Initialize both s1 and s2 with INT_MAX. Traverse ...
Read MoreImplement MySQL ORDER BY without using ASC or DESC?
For this, you can use FIND_IN_SET(). Let us first create a table −mysql> create table DemoTable -> ( -> Number int -> ); Query OK, 0 rows affected (2.25 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.91 sec) mysql> insert into DemoTable values(60); Query OK, 1 row affected (0.69 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.72 sec) mysql> insert into DemoTable values(800); Query OK, 1 row affected (0.75 sec)Display all records ...
Read MoreMySQL query to find all rows where string contains less than four characters?
Use CHAR_LENGTH() and find the count of characters in every string and then get the strings which are less than four characters. Let us first create a table −mysql> create table DemoTable -> ( -> Name varchar(100) -> ); Query OK, 0 rows affected (1.38 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Bob'); Query OK, 1 row affected (1.60 sec) mysql> insert into DemoTable values('Carol'); Query OK, 1 row affected (0.25 ...
Read MoreC++ Program to Find ith Largest Number from a Given List Using Order-Statistic Algorithm
This is a C++ program to find ith largest number from a given list using Order-Statistic Algorithm.AlgorithmsBegin function Insert() to insert nodes into the tree: Arguments: root, d. Body of the function: If tree is completely null then insert new node as root. If d = tmp->data, increase the count of that particular node. If d < tmp->data, move the tmp pointer to the left child. If d > tmp->data, move the tmp pointer to the right child. End Begin ...
Read MoreC++ Program to Generate All Possible Combinations of a Given List of Numbers
This is a C++ program to generate all possible combinations of a given list of numbersAlgorithmsBegin Take the number of elements and the elements as input. function Combi(char a[], int reqLen, int s, int currLen, bool check[], int l) : If currLen>reqLen then Return Else if currLen=reqLen then Then print the new generated sequence. If s=l then Then return no further element is left. For every index there are two option: either proceed with a start as ‘true’ and recursively call Combi() with incremented value of ...
Read MoreDisplay 3 decimal places in MySQL?
To display 3 digits after decimal, use TRUNCATE(). Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Value DECIMAL(10, 5) ); Query OK, 0 rows affected (0.51 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Value) values(109.4567); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable(Value) values(15.9875); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable(Value) values(1234.2346789); Query OK, 1 row affected, 1 warning (0.14 sec)Following is the query to display all records from the table using select statement −mysql> select ...
Read More