Sybase SQL Anywhere database has a number of very useful features that make it very competitive in comparison with competitors. First, it allows you to handle very large volumes of data. Secondly - it is highly productive, that is, despite the offer large volumes of data fast. Thirdly it requires mi...
SQL
Microsoft SQL Server Compact Edition is a simple local relational database that doesn't require installation, and the connection is made to the database file. You do not need admin rights to work with the base. You can only "password" the base. For many developers, such a simple database is simply n...
When creating a SQL database connection, you can specify a query to select filtered or combined data. The standard tools of the data source creation wizard also allow you to include parameters in the SQL query. In this case, the designation of the parameter will depend on the type of DBMS to which t...
Sometimes, a stored procedure or function is required to use the results of a sample several times. In such cases, we often use temporary tables. However, it is worth considering some advantages and disadvantages of temporary tables. Advantages: Temporary tables are full tables. Therefore, you c...
In the second part of the article we will talk about the functions themselves, which are used to form values. The window function calculates the value from a set of data associated with the current row, that is, data from the same group, if Partition by is used. Conventional aggregate functions for ...
Long time ago an interesting functionality appeared in Microsoft SQL Server 2005- window functions. These functions allow you to perform calculations in a given range of lines within a Select clause. For those who have not encountered these functions, the question arises - “What does window me...
In this article we will discuss the use of stored procedures to retrieve data for a report. Using the MS SQL example, I'll show you how to create and use functions in a report. As you know, Transact SQL allows us to create stored procedures and functions. Stored procedures are used to automate any ...
Most users of FastReport.Net build reports receiving data from SQL DBMS, and would like to take advantage of Sql in their reports. Nothing prevents you from using dynamic queries, stored procedures and functions. In this article, we will have a look at how to use dynamic queries when creating a repo...
To obtain data in MS SQL, you can use sql queries, stored procedures, and stored functions. We have already discussed how to use dynamic queries and stored procedures as a report data source. In this article, we will create a table and scalar function and use them in the report. I recall that table...