Category Archives: SQL

SQL LENGTH Function Tutorial

SQL LENGTH FUNCTION

This is a detailed tutorial of the LENGTH Function in SQL. Learn to find the number of characters of the column values using the LENGTH function. SQL LENGTH Function The LENGTH Function in SQL is used to find out the number of characters of a given string. This way, you can easily find out the […]

SQL Query To Find Duplicate Records

SQL Query To Find Duplicate Records

This is a detailed tutorial of querying duplicate records in a database table. Learn the SQL Query to find out completely or partially duplicate rows. Duplicate Table Records There might be cases when you require to find out the duplicate records of a database table. The duplicate records refer to the table rows who are […]

SQL Command Types – DDL, DQL, DML, DCL & TCL

SQL Command Types

SQL Commands are categorized into DDL, DQL, DML, DCL & TCL. Learn the commands included in each of these categories with their purpose and explanation. SQL Command Types Structured Query Language (SQL) is used to create a database(s) and perform different operations on it. There is a huge list of operations that can be performed […]

SQL Wildcard Characters

SQL Wildcard Characters

This is a detailed tutorial of SQL Wildcard Characters. Learn to use different wildcards to find matching pattern strings with the LIKE operator. Use of SQL Wildcard Characters Wildcard characters are used in the SQL Like Operator to create different patterns for which you want to find the values in the database tables. A single […]