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Tag Archives: SQL Views In DBMS

HAVING Clause In Dbms

having clause is used with SQL Queries to give more precise condition for a statement. It is used to mention condition in Group based SQL functions, just like WHERE clause. …

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Distinct keyword in dbms

The distinct keyword is used with Select statement to retrieve unique values from the table. Distinctremoves all the duplicate records while retrieving from database. Syntax for DISTINCT Keyword SELECT distinct …

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AND & OR operator In Dbms

AND and OR operators are used with Where clause to make more precise conditions for fetching data from database by combining more than one condition together. AND operator AND operator …

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SQL Constraints

SQL Constraints are rules used to limit the type of data that can go into a table, to maintain the accuracy and integrity of the data inside table. Constraints can …

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SQL Functions

SQL provides many built-in functions to perform operations on data. These functions are useful while performing mathematical calculations, string concatenations, sub-strings etc. SQL functions are divided into two catagories, Aggregrate …

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Join in SQL

SQL Join is used to fetch data from two or more tables, which is joined to appear as single set of data. SQL Join is used for combining column from …

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SQL Alias

Alias is used to give an alias name to a table or a column. This is quite useful in case of large or complex queries. Alias is mainly used for …

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Set Operation in SQL

SQL supports few Set operations to be performed on table data. These are used to get meaningful results from data, under different special conditions. Union UNION is used to combine …

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SQL Sequence

Sequence is a feature supported by some database systems to produce unique values on demand. Some DBMS like MySQL supports AUTO_INCREMENT in place of Sequence. AUTO_INCREMENT is applied on columns, …

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