Category: SQL

The SQL BETWEEN operator is used to filter data based on a range of values, particularly useful when working with date or numerical data. When dealing with dates, BETWEEN can be employed to select records that fall within a specified date range. Syntax The basic syntax for using BETWEEN with dates in SQL Server is…(Continue Reading)

In SQL Server, the CAST function is used to convert one data type to another. When dealing with dates, it’s common to use the CAST function to convert a string or another compatible data type to the DATE data type. The CAST function allows you to explicitly specify the target data type and perform the…(Continue Reading)

The DATEFROMPARTS function is a built-in function in SQL that is used to construct a date from its individual components, such as year, month, and day. This function is particularly useful when you have date information stored in separate columns within a table, and you need to combine them into a single date value. Syntax…(Continue Reading)

SQL Full-Text Index is a feature in relational database management systems (RDBMS) that allows efficient and powerful searching of text data stored in database columns. It provides advanced search capabilities, including searching for keywords, word variations, and proximity of words within a document. To create a full-text index in SQL, you need to follow these…(Continue Reading)

A unique index in SQL is a database structure that enforces uniqueness on one or more columns in a table. It ensures that no duplicate values can be inserted into the specified column(s) of a table. A unique index can be created on a single column or on a combination of multiple columns, depending on…(Continue Reading)

A non-clustered index in SQL is a data structure that improves the performance of queries by providing a quick access path to the data. Unlike a clustered index, which determines the physical order of the data in a table, a non-clustered index creates a separate structure that contains a sorted copy of the indexed column(s)…(Continue Reading)

A clustered index in SQL is a type of index that determines the physical order of data in a table. It defines the order in which the rows of a table are stored on disk or other storage media. Unlike a non-clustered index, which creates a separate structure to store index data, a clustered index…(Continue Reading)

The CREATE TRIGGER statement in SQL Server is used to create a database object that automatically executes a set of SQL statements when a specific event occurs in the database. This event can be an INSERT, UPDATE, or DELETE operation on a table or view. Syntax The syntax of the CREATE TRIGGER statement in SQL…(Continue Reading)

In SQL, an index is a database object used to speed up the retrieval of data from tables. It works by creating a data structure that allows the database management system (DBMS) to quickly locate the rows of a table that match a particular search criteria. By creating an index on one or more columns…(Continue Reading)

SQL CREATE VIEW statement is used to create a virtual table that is based on the result set of a SELECT statement. A view does not store any data of its own; instead, it references data from one or more tables in the database. Views are used to simplify complex queries and to provide a…(Continue Reading)