SQL Training

❮ Previous SQL Editor Next ❯ SQL Between The BETWEEN is a logical operator in SQL, which fetches the records from the table within the range specified in the query. We can use this operator to select numbers, text, or dates. The BETWEEN operator in SQL includes the starting and ending values. Example: SELECT column_Name1, […]

❮ Previous SQL Editor Next ❯ SQL In Nested Query A nested query in SQL, often referred to as a subquery, is a query inside another query. It allows you to retrieve data from one table or use the result of one query as part of another query. Example: SELECT Column_Name1, Column_Name2, …., Column_NameN FROM

❮ Previous SQL Editor Next ❯ SQL Wildcard 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. Example: SELECT column_Name1, column_Name2 …., column_NameN FROM

❮ Previous SQL Editor Next ❯ SQL Like The LIKE is a logical operator in the Structured Query Language. This SQL operator is used in the WHERE clause with the following three statements: SELECT Statement UPDATE Statement DELETE Statement – It filters the records from the columns based on the pattern specified in the SQL

❮ Previous SQL Editor Next ❯ SQL Null First of all we should know what a null value is. Null values are used to represent missing unknown data. A NULL value is different from a zero value or a field that contains spaces. A field with a NULL value is one that has been left

❮ Previous SQL Editor Next ❯ SQL Update The SQL commands UPDATE are used to modify the data that is already in the database. The SQL DELETE command uses a WHERE clause. SQL UPDATE statement is used to change the data of the records held by tables. Which rows are to be updated, is decided