Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Let us first create a table −mysql> create table DemoTable( Value int ); Query OK, 0 rows affected (1.35 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.30 sec) mysql> insert into DemoTable values(NULL); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.59 sec) mysql> insert into DemoTable values(0); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.70 ... Read More
The SELECT * is slower than 40 columns listing. It’s a better choice to list the column names while using the SELECT query. Let us see a simple example and create a table −mysql> create table DemoTable( Id int, Name varchar(20), Age int, ZipCode varchar(20), CountryName varchar(20) ); Query OK, 0 rows affected (0.82 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(101, 'Chris', 23, '0909332', 'US'); Query OK, 1 row affected (0.48 sec) mysql> insert into DemoTable values(102, 'Bob', 24, '8747443', 'AUS'); Query OK, 1 row affected (0.50 sec) ... Read More
Let us first create a table −mysql> create table DemoTable( Marks int ); Query OK, 0 rows affected (1.34 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(78); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(67); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(76); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable values(98); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(86); Query OK, 1 row affected (0.11 ... Read More
The Python libraries are now available in MATLAB (since 2014b). We can run code directly in MATLAB if we are using version 2014b or later.This makes it possible to use python modules in MATLAB. Without any other changes, just prefix ‘py’ before the python library name you want to use. Let us use the Python calendar module as an example.py.calendar.isleap(2016); py.calendar.isleap(2017);OUTPUTans =1 ans = 0To run our own function, we can create a file in our current MATLAB working directory. Let’s say we created a file called ‘hello.py’ that contains these two lines:def world(): return 'hello world';# In ... Read More
Let us first create a table −mysql> create table DemoTable( Data int ); Query OK, 0 rows affected (0.98 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(60); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(50); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(60); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(80); Query OK, 1 row affected (0.15 ... Read More
Let us first create a table −mysql> create table DemoTable1( Value int ); Query OK, 0 rows affected (0.65 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1 values(67); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable1 values(46); Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −mysql> select *from DemoTable1;This will produce the following output −+-------+ | Value | +-------+ | 67 | | 46 | +-------+ 2 rows in set (0.00 sec)Following is the query to create the ... Read More
Let us first create a table with ENUM type column −mysql> create table DemoTable( isMarried ENUM('1', '0') ); Query OK, 0 rows affected (0.46 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('0'); Query OK, 1 row affected (0.08 sec) mysql> insert into DemoTable values('1'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values('1'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values('0'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable values('0'); Query OK, 1 row affected (1.00 sec) mysql> insert into DemoTable values('1'); Query ... Read More
For this, use ORDER BY FIELD(). Let us first create a table −mysql> create table DemoTable( ClientId varchar(40), ClientName varchar(40) ); Query OK, 0 rows affected (0.55 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('987_John', 'John'); Query OK, 1 row affected (0.33 sec) mysql> insert into DemoTable values('1000_Sam', 'Sam'); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable values('777_Carol', 'Carol'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('2000_Bob', 'Bob'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select ... Read More
Let us first create a table −mysql> create table DemoTable( ArrivalDate timestamp ); Query OK, 0 rows affected (1.96 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-09-14 17:25:00'); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable values('2019-09-13 17:25:00'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('2016-09-01 17:20:10'); Query OK, 1 row affected (0.38 sec) mysql> insert into DemoTable values('2019-09-11 12:00:00'); Query OK, 1 row affected (0.16 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+---------------------+ | ... Read More
Let us first create a table −mysql> create table DemoTable ( StudentId int, StudentFirstName varchar(100), StudentLastName varchar(100) ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(1000, 'Adam', 'Smith'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values(1000, 'John', 'Doe'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values(1000, 'David', 'Miller'); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+-----------+------------------+-----------------+ | StudentId | StudentFirstName ... Read More