Data on the Move – Loading Database for Analytical Brilliance
In QlikView, you can load data from a database into your QlikView document by using the “Data Load Editor.” The Data Load Editor is a tool that allows you to create and edit data load scripts, which define how data is extracted from a database and loaded into QlikView.
Establishing a connection to the database is the first step in loading data into QlikView from a database. This can be done using one of the built-in database connectors that come with QlikView, or by using an ODBC or OLEDB connection. Once you have established a connection to the database, you can use the Data Load Editor to create a data load script that specifies the data you want to load and the table or tables where it is stored in the database.
To create a data load script, you can use the “Table View” or the “Script View” in the Data Load Editor. The Table View allows you to select the tables and fields you want to load from the database, while the Script View allows you to write SQL statements to extract data from the database. Once you have created a data load script, you can run it to load the data into your QlikView document.
In addition to loading data from a database, you can also load data from other sources, such as text files, Excel spreadsheets, and CSV files. QlikView also provides a number of functions and options for transforming and manipulating data as it is being loaded, such as filtering, sorting, and merging data from multiple sources.
In QlikView, data can be loaded from a database using the “Connect” statement in the data loading script. The Connect statement is used to define the connection to the database and extract the data.
To load data from a database, the first step is to create a connection to the database using the Connect statement. The Connect statement requires the following parameters:
- Connection Type: The type of database connection (e.g. ODBC, OLEDB, or JDBC)
- User ID: The user ID used to connect to the database
- Password: The password used to connect to the database
Once the connection is established, the data can be extracted from the database using the SQL Select statement. The SQL Select statement is used to define the query that retrieves the data from the database.
In addition to the above, QlikView also has a built-in connector to connect with many databases like SQL Server, Oracle, MySQL, PostgreSQL and many more. This eliminates the need to write a connection string and makes it easy to connect to the desired database.
QlikView also allows you to load data incrementally, which means it can only load new or changed data, rather than reloading the entire data set each time. This can help to improve performance when working with large data sets.
In summary, loading data from a database in QlikView involves creating a connection to the database using the Connect statement, and then extracting the data using an SQL Select statement. QlikView’s built-in connectors make it easy to connect to a wide range of databases, and its incremental loading feature can help to improve performance when working with large data sets.