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Data Definition Language (DDL) in SQL

The Data Definition Language (DDL) part of SQL permits database tables to be created or deleted. We can also define

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Characteristics of SQL Commands

August 11, 2020 Krishna Characteristics of SQL, Characteristics of SQL Commands, MySQL, SQL, SQL Commands

Here you can see that SQL commands follow a number of basic rules: • SQL keywords are not normally case

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SQL Commands

August 11, 2020 Krishna COMMANDS, Database System, dbms, MySQL, SQL, SQL Commands

There are three groups of commands in SQL: 1. Data Definition 2. Data Manipulation and 3. Transaction Control

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What is SQL?

August 11, 2020 Krishna Database System, dbms, MySQL, SQL, SQL injection, What is SQL?

Structured Query Language, commonly abbreviated to SQL and pronounced as “sequel”, is not a conventional computer programming language in the

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PHP MySQL connector

May 17, 2020 eduguru Both MySQLi and PDO have their advantages, Connecting MySQL Server, MySQL Examples in Both MySQLi and PDO Syntax, MySQLi Installation, Open a Connection to MySQL, PHP MySQL connector, Should I Use MySQLi or PDO

PHP MySQL connector Example: <html> <head> <title>Connecting MySQL Server</title> </head> <body> <?php $dbhost = ‘localhost:3306’; $dbuser = ‘guest’; $dbpass =

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LOCATE() – MySQL Function

May 16, 2020 eduguru LOCATE() - MySQL Function The LOCATE() function returns the position of the first occurrence of a substring in a string. If the substring is not found within the original string, String, this function returns 0. This function performs a case-insensitive search. LOCATE(substring

LOCATE() – MySQL Function The LOCATE() function returns the position of the first occurrence of a substring in a string.

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time_to_sec MySQL function

May 14, 2020 eduguru MySQL, mysql function, php mysql program, PHP MySQL Program example of time_to_sec, time_to_sec, time_to_sec MySQL function

time_to_sec MySQL function The TIME_TO_SEC() function converts a time value into seconds. SELECT TIME_TO_SEC(“19:30:10”); Output: 70210 SELECT TIME_TO_SEC(“-03:30:00”); Output: -12600

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CONCAT() Function – MySQL

May 13, 2020 eduguru …) Arguments string1 First string to be joined. string2 Second string to be joined. Up to N number of strings can be specified this way. Here’s an example: SELECT CONCAT('Homer', ' ', '--> ', 'Simpson') AS 'Full Name'; Result: +---------------+ | Full Name | +---------------+ | Homer Simpson | +---------------+ SELECT CONCAT('Homer', 'Simpson') AS 'Full Name'; Result: +--------------+ | Full Name | +--------------+ | HomerSimpson | +--------------+ mysql> SELECT CONCAT(pub_city, but its main use is to concatenate two or more strings. CONCAT (string1, CONCAT() Function - MySQL, country) -> FROM publisher; +---------------------------------+ | CONCAT(pub_city, MySQL has the CONCAT() function, string2, which allows you to concatenate two or more strings. The function actually allows for one or more arguments

CONCAT() Function – MySQL MySQL has the CONCAT() function, which allows you to concatenate two or more strings. The function

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TIMEDIFF – MySQL Function

May 12, 2020 eduguru This returns the difference between two datetime expressions: For example: SELECT TIMEDIFF("2020-05-10 13:10:11"

TIMEDIFF – MySQL Function This returns the difference between two datetime expressions: For example: SELECT TIMEDIFF(“2020-05-10 13:10:11”, “2020-05-05 13:10:10”); Output:

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Truncate or Empty table in mysql from phpmyadmin

March 29, 2020 eduguru Truncate or Empty table in mysql from phpmyadmin

Truncate or Empty table in mysql from phpmyadmin phpMyAdmin is a free software tool written in PHP intended to handle