Category: SQL

In SQL, the DISTINCT keyword is used to retrieve unique values from a table or a result set. It is often used in conjunction with the SELECT statement to filter out duplicate rows. Syntax The syntax for using DISTINCT is as follows: SELECT DISTINCT column1, column2, … FROM table_name; In this syntax, the column names…(Continue Reading)

The SQL SELECT statement is one of the fundamental commands used in relational databases to retrieve data. It allows users to query a database table and return a set of data that meets specific criteria. Syntax The basic syntax of the SELECT statement is as follows: SELECT column1, column2, …, columnN FROM table_name WHERE condition;…(Continue Reading)

The SQL DELETE statement is used to delete records from a database table. It allows you to remove one or more rows from a table that match a specific condition. Syntax The basic syntax of the DELETE statement is as follows: DELETE FROM table_name WHERE condition; Here, table_name refers to the name of the table…(Continue Reading)

The SQL UPDATE statement is used to modify existing records in a table. It allows you to change the values of one or more columns in one or more rows of a table based on specified conditions. Syntax The basic syntax for the UPDATE statement is as follows: UPDATE table_name SET column1 = value1, column2…(Continue Reading)

The SQL INSERT statement is used to add new data records into a table in a relational database. The INSERT statement is one of the fundamental SQL commands and is essential for adding new data to a database. Syntax The basic syntax for the INSERT statement is as follows: INSERT INTO table_name (column1, column2, column3,…(Continue Reading)

SQL CREATE TABLE is a statement that is used to create a new table in a database. A table is a collection of data that is organized in rows and columns, similar to a spreadsheet. Each column represents a specific data type, while each row represents a unique record in the table. Syntax The basic…(Continue Reading)