A Data Definition Language (DDL) is a sublanguage of SQL responsible to create and manipulate database objects such as tables, indices, users, views, schemas, etc structure in SQL. Data Definition Language is also known as data description language in some contexts, as it describes the fields and records in a database table. DDL provides the following statement …
Function in SQL are required to convert the data from one type to another but also performing calculations on data. SQL has many built-in functions for performing these operations. So function in SQL topic, we will discuss more details about what are functions available in SQL. How to use these in our regular SQL queries. …
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Join in SQL is a concept or a mechanism. Implemented on the select statement to extract data from multiple tables. JOIN clause is used to join rows of two or more tables based on the related column between them. To extract data from multiple tables the table must have a relationship and depend on the …
It is the last clause of select statement responsible to arrange the records in a proper manner either ascending or descending order. To do so order by clause provides two attributes, asc and desc. Order by clause in SQL default order is asc. Syntax for Order By clause in SQL Better to read the previous …
Wildcard Operators in SQL is not an operator but is a character. A wildcard character is used to substitute one or more characters in a string. Wildcard characters are used with the LIKE operator. The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. Please read the …
