MySQL RIGHT JOIN Summary: in this tutorial, you will learn how to use the MySQL RIGHT JOIN to query data from two tables. Introduction to MySQL RIGHT JOIN clause MySQL RIGHT JOIN is similar to LEFT JOIN, except that the treatment of the joined tables is reversed. Here’s the syntax of the RIGHT JOIN of…
Read more
MySQL LEFT JOIN Summary: in this tutorial, you will learn about MySQL LEFT JOIN clause and how to apply it to query data from two or more tables. Introduction to MySQL LEFT JOIN clause The LEFT JOIN allows you to query data from two or more tables. Similar to the INNER JOIN clause, the LEFT…
Read more
MySQL INNER JOIN Summary: in this tutorial, you will learn how to use the MySQL INNER JOIN clause to select data from multiple tables based on join conditions. Introduction to MySQL INNER JOIN clause The INNER JOIN matches each row in one table with every row in other tables and allows you to query rows…
Read more
MySQL Join Summary: in this tutorial, you will learn various MySQL join clauses in the SELECT statement to query data from two tables. Introduction to MySQL join clauses A relational database consists of multiple related tables linking together using common columns, which are known as foreign key columns. Because of this, data in each table…
Read more
MySQL Alias Summary: in this tutorial, you will learn how to use MySQL alias to improve the readability of the queries. MySQL supports two kinds of aliases: column alias and table alias. MySQL alias for columns Sometimes, column names are so technical that make the query’s output very difficult to understand. To give a column…
Read more
MySQL IS NULL Summary: in this tutorial, you will learn how to use the MySQL IS NULL operator to test whether a value is NULL or not. Introduction to MySQL IS NULL operator To test whether a value is NULL or not, you use the IS NULL operator. Here’s the basic syntax of the IS…
Read more
MySQL LIMIT Summary: in this tutorial, you will learn how to use MySQL LIMIT clause to constrain the number of rows returned by a query. Introduction to MySQL LIMIT clause The LIMIT clause is used in the SELECT statement to constrain the number of rows to return. The LIMIT clause accepts one or two arguments. The…
Read more
MySQL LIKE Summary: in this tutorial, you will learn how to use the MySQL LIKE operator to query data based on a specified pattern. Introduction to MySQL LIKE operator The LIKE operator is a logical operator that tests whether a string contains a specified pattern or not. Here’s the syntax of the LIKE operator: expression…
Read more
MySQL BETWEEN Summary: in this tutorial, you will learn how to use MySQL BETWEEN operator to determine whether a value is in a range of values. Introduction to MySQL BETWEEN Operator The BETWEEN operator is a logical operator that specifies whether a value is in a range or not. Here’s the syntax of the BETWEEN…
Read more
MySQL NOT IN Summary: in this tutorial, you’ll learn how to use the MySQL NOT IN operator to check if a value is not in a list of values. Introduction to the MySQL NOT IN operator The NOT operator negates the IN operator: value NOT IN (value1, value2, value2) Code language: SQL (Structured Query Language)…
Read more