Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
If you want only the string values, then use the below syntax −select *from yourTableName where yourColumnName NOT regexp '^[0-9]+$';If you want only the digit, then use the below syntax −select *from yourTableName where yourColumnName regexp '^[0-9]+$';Let us first create a table −mysql> create table DemoTable( Id varchar(100) ); Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('1000'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('Carol_Smith'); Query OK, 1 row affected (0.15 ... Read More
Bellman Ford Algorithm is dynamic programming algorithm which is used to find the shortest path of any vertex computed from a vertex treated as starting vertex. this algorithm follows iterative method and continuously tries to find shortest Path. The Bellman Ford Algorithm on weighted graph.this algorithm was proposed by Alphonso shimbel in 1955. The algorithm has revisions by Richard Bellman and Lester Ford in the year 1956 and 1958, due to this algorithm was named Bellman Ford Algorithm. This algorithm was also revised by Eward F. Moore in 1957, which made its name to Bellman-Ford-Moore Algorithm.This algorithm is better as ... Read More
Let us first create a table −mysql> create temporary table DemoTable ( SerialNumber int ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command. Here, we are inserting multiple values in a temporary table −mysql> insert into DemoTable values(1),(2),(3),(4),(5),(6),(7),(8); Query OK, 8 rows affected (0.00 sec) Records: 8 Duplicates: 0 Warnings: 0Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+--------------+ | SerialNumber | +--------------+ | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | | 7 | | 8 | +--------------+ 8 rows in set (0.00 sec)
For this, you can use GROUP_CONCAT() along with DISTINCT. Let us first create a table −mysql> create table DemoTable ( Id int, Subject varchar(40) ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'MySQL'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(100, 'MongoDB'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values(100, 'Java'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(100, 'MongoDB'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(101, 'MySQL'); ... Read More
For this, you can filter records on the basis of LIKE. Let us first create a table −mysql> create table DemoTable ( Name varchar(50) ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John Smith'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('Adam Smith'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('Carol'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('David Miller'); Query OK, 1 ... Read More
For sort by distance, use ORDER BY ABS(). Let us first create a table −mysql> create table DemoTable ( Number int ); Query OK, 0 rows affected (1.16 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable values(101); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(102); Query OK, 1 row affected (0.46 sec) mysql> insert into DemoTable values(103); Query OK, 1 row affected (0.84 sec) mysql> insert into DemoTable values(104); Query OK, 1 row affected (0.17 sec) mysql> insert ... Read More
For this, compare the date records with the current date using the CURDATE() method. Let us first create a table −mysql> create table DemoTable ( RegistrationLastDate datetime ); Query OK, 0 rows affected (0.61 sec)Let’s say the current date is −2019-09-03Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-08-01'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('2019-09-03 9:50:56'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('2019-09-03'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('2019-09-02'); Query OK, 1 row affected (0.18 sec) mysql> ... Read More
Array is a sequence of elements of same data type. in this problem we are going to consider integer array for solving the problem. in this problem we are going to find sum of Elements found by dividing the element from the element proceeding it.Let’s take a few examples to understand this Problem better −Example 1 −Array : 3 , 5 ,98, 345 Sum : 26Explanation − 3 + 5/3 + 98/5 + 345/98 = 3 + 1 + 19 + 3 = 26We have divided each element with its preceding element and considered only integer parts of the divisions ... Read More
Let us first create a table −mysql> create table DemoTable ( StudentId varchar(40) ); Query OK, 0 rows affected (0.55 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('10'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('~'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(NULL); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('40'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(NULL); Query OK, 1 row affected ... Read More
C++ programming language defines a container in c++ standard Template Library named as bitset. This bitset container is used in order to work on elements at the bit level i.e. each bit of the variable the bits i.e. binary conversion of the given value.1. Bitset is like an string − Bitset is a container of bits ( only 0 and 1 are valid ). You can create a bitset with any set of bits specified by start index value of the bitset and the number of elements that are considered i.e. you can create a bitset with 2 elements starting ... Read More