What is simple and complex queries?

Question

There are 2 types of Views in SQL: Simple View and Complex View. Simple views can only contain a single base table.Complex views can be constructed on more than one base table. In particular, complex views can contain: join conditions, a group by clause, a order by clause. 31 окт. 2019 г.

What is simple and complex query?

Simple View: A view based on only a single table, which doesn't contain GROUP BY clause and any functions. Complex View: A view based on multiple tables, which contain GROUP BY clause and functions.

What is simple query?

DEFINITION: A simple query is a query that searches using just one parameter. A simple query might use all of the fields in a table and search using just one parameter. or it might use just the necessary fields about which the information is required, but it will still use just one parameter (search criteria)

What's a complex query?

DEFINITION: A complex query is a parameter query that searches using more than one parameter value i.e. on two or more criteria.

What are simple queries in SQL?

An SQL query consists of three pieces, or blocks: the select block, the from block and the where block. The database will return only those records that have an ra between 194 and 195 and a dec between 2 and 3. This query is shown in the query window below.

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