mysql

UNIQUE Constraint

August 31, 2021 eduguru 0 Comments

UNIQUE Constraint The UNIQUE constraint ensures that all values in a column are different. Both the UNIQUE and PRIMARY KEY constraints provide a guarantee for uniqueness

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MySQL – NOT NULL Constraint

August 31, 2021 eduguru 0 Comments a column can hold NULL values. The "NOT NULL constraint" enforces a column to NOT accept NULL values. This enforces a field to always contain a value, NOT NULL Constraint, NOT NULL Constraint By default, which means that you cannot insert a new record

NOT NULL Constraint By default, a column can hold NULL values. The “NOT NULL constraint” enforces a column to NOT accept

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MySQL Constraints

August 31, 2021 eduguru 0 Comments MySQL Constraints

MySQL Constraints SQL constraints are used to specify rules for data in a table. The constraint in MySQL is used

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MySQL CREATE TABLE Statement

August 31, 2021 eduguru 2 Comments .... ); The column parameters specify the names of the columns of the table. The datatype parameter specifies the type of data the column can hold (e.g. varchar, 'DATE', Address, Address varchar(255), and City columns are of type varchar and will hold characters, and City: Example CREATE TABLE Persons ( PersonID int, and the maximum length for these fields is 255 characters. The empty "Persons" table will now look like this: PersonID LastName FirstName Address City, City varchar(255) ); The PersonID column is of type int and will hold an integer. The LastName, column2 datatype, column3 datatype, etc.). MySQL CREATE TABLE Example The following example creates a table called "Persons" that contains five columns: PersonID, FirstName, FirstName varchar(255), integer, LastName, LastName varchar(255), MySQL CREATE TABLE Statement, MySQL CREATE TABLE Statement The MySQL CREATE TABLE Statement The CREATE TABLE statement is used to create a new table in a database. Syntax CREATE TABLE table_name ( column1 datatype

MySQL CREATE TABLE Statement The MySQL CREATE TABLE Statement The CREATE TABLE statement is used to create a new table in a

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MySQL AUTO INCREMENT Field

August 31, 2021 eduguru 0 Comments MySQL AUTO INCREMENT Field

MySQL AUTO INCREMENT Field What is an AUTO INCREMENT Field? Auto-increment allows a unique number to be generated automatically when

linux mysql phpMyAdmin

Install MySQL / MariaDB Server with PhpMyAdmin Centos 8

August 24, 2021 eduguru 0 Comments Install MySQL / MariaDB Server with PhpMyAdmin Centos 8, Install MySQL / MariaDB Server with PhpMyAdmin Centos 8 Install PHP, MySQL support package for PHP

Install MySQL / MariaDB Server with PhpMyAdmin Centos 8 Install PHP, MySQL support package for PHP, and other PHP packages

mysql

mysql is dead but subsys locked

July 21, 2021 eduguru mysql is dead but subsys locked

MySQL is dead but subsys locked Issue Description: When tried to connect to MySQL or run any command. It Displayed

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How to check table Engine in MySQL

June 4, 2021 eduguru alter mysql table engine, change innodb to myISM, change myISM to innodb, change mysql table engine, check and alter mysql table engine, check table engine in mysql, How to check table Engine in MySQL

How to check table Engine in MySQL With the help of below query, we can check the table engine in

mysql

MySQL Addtime() : Adding time to datetime

June 3, 2021 eduguru add seconds in datetime mysql, mysql addtime function. mysql add time to datetime, mysql function

MySQL Addtime() : Adding time to datetime The ADDTIME() function adds a time interval to a time/datetime and then returns the

DBMS mysql

Data Manipulation Language in SQL (DML)

August 11, 2020 Krishna Data Manipulation, Data Manipulation Language in SQL (DML), database, Database System, dbms, MySQL, SQL

SQL language also includes syntax to update, insert, and delete records. These query and update commands together form the Data