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Select query is a DRL. DRL stands for Data retrieval language. Example select * from table_name;
What else can I help you with?
What can a select query do?
Select query come under the category of DRL (data retrieval language). A select query is used to retrieve data from DB.
What is a select query?
Select query is a DRL. DRL stands for Data retrieval language. Example select * from table_name;
What does a query allow you to do on a database?
a query allows you to select certain data
What is a complex query in Microsoft access?
A select query with multiple criteria
How do you return multiple columns from sub-query?
To return multiple columns from a sub-query, you can include the sub-query in the SELECT statement of your main query. For example, you can use the sub-query in the FROM clause or as a derived table, specifying the columns you want to select. Ensure that the sub-query is properly formatted to return the desired columns, and you can alias it if necessary to improve readability. Here's a basic example: SELECT a.column1, a.column2 FROM (SELECT column1, column2 FROM table_name WHERE condition) AS a;
When do you perform denormalization?
Generally to optimize the performance of select query. To minimize joins used in the query.
What does a query do on a database?
it allows you to select certain data
What is difference between select query and insert query?
A SELECT query is used to retrieve data from a database, allowing users to specify which columns and rows they want to view. In contrast, an INSERT query is used to add new records to a database table. While SELECT queries focus on data extraction, INSERT queries focus on data entry and modification. Essentially, SELECT is for reading data, and INSERT is for writing data.
How do I create a SQL Select query that will return the number of columns not rows in my query result. So if my query returns 1 row with 5 columns I want the query to generate the number 5.?
I have the same question but well a not-so-elegant solution would be to define a view within your DBMS e.g. CREATE VIEW view_name AS (SELECT ...your_query) and then apply a SELECT COUNT(*) FROM view_name
What is a query that extracts data from a table which meets certain specified criteria?
If the criteria is entered in by the user as the query is run, by prompting the user, then it is a Parameter query. Criteria can also be built direct into the query in which case it is a standard Select query.
A type of query that retrieves data from one or more tables and makes it available for use in the format of a datasheet is a?
Select Query
What type of query that retrieves data from one or more tables and makes it available for use in the format of a datasheet is a what Query?
select
