Difference between revisions of "LibreOffice-Suite-Base/C2/Create-queries-using-Design-View/English-timed"
From Script | Spoken-Tutorial
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Revision as of 15:00, 9 July 2014
| Time | Narration |
| 00:00 | Welcome to the Spoken tutorial on LibreOffice Base. |
| 00:04 | In this tutorial, we will learn how to |
| 00:06 | Create a query by using the Design View. |
| 00:10 | Add tables to the Query Design window |
| 00:13 | Select fields.
Set up aliases, Set up sorting order And provide search criteria for a query |
| 00:23 | For this, let us consider our familiar Library database example. |
| 00:29 | In this Library database, we have stored information about books and members. |
| 00:37 | And, we also have a table to track the books issued to the members. |
| 00:45 | Now we will create a new query, to list all the books that have been issued to the members, |
| 00:54 | In other words, let us generate a history of books that have been issued to the members. |
| 01:03 | Lets open the Library database. |
| 01:07 | Let us click on the Queries icon on the left panel. |
| 01:13 | On the right panel, we will click on the ‘Create Query in Design view’. We now see a new window which is also called the Query Design window, |
| 01:28 | And we also see a small popup window at the top, that says Add Table or Query. |
| 01:39 | Here is where we will define the source of the data for the query. |
| 01:46 | And we will need all the three tables for our query to generate the history of the books issued to members. |
| 01:57 | We will do this by clicking on the Books table in the list and then clicking on the Add button on the right in the popup window. |
| 02:11 | We will similarly add the BooksIssued table and the Members table <pause> |
| 02:19 | We now see that, the three tables have appeared in the background query design window. |
| 02:26 | Let us now ‘Close the popup window. |
| 02:31 | This brings the Query design window to the foreground. |
| 02:39 | Notice that the three tables are in the top half of the window |
| 02:46 | Here let us introduce some space among these tables. |
| 02:53 | Let us click, drag and drop the Members table to the far right. |
| 03:01 | And then, click, drag and drop the BooksIssued table to the centre. |
| 03:11 | Now we see lines linking these tables and these are the relationships that we had established earlier. |
| 03:23 | We can double-click on the lines to see the relationship details. |
| 03:30 | For now, let us see the bottom half of the Query design window. |
| 03:37 | This area has several rows of cells. As we design the query, we will fill these up. |
| 03:48 | First, we will check the Field column. |
| 03:53 | This is for specifying the fields we need to display in the result set. |
| 04:01 | To do this, we will first double click on the Title field in the Books table in the upper half of the window. |
| 04:12 | Next is the Name field in the Members table. |
| 04:17 | And then the Issue Date field in the BooksIssued table. |
| 04:24 | Next, the Return date,the actual return date
And finally the checked in field. |
| 04:34 | Notice these fields in the bottom half of the window in the first row. |
| 04:44 | Also the corresponding table names in the third row. |
| 04:50 | Next, let us look at the ‘Alias’ in the second row. |
| 04:57 | This is where we can enter descriptive names for the selected fields. |
| 05:04 | So let us type in aliases as shown in the image.<pause> |
| 05:11 | And we are done with the aliases. |
| 05:15 | Next, let us look at the Sort row. |
| 05:21 | We can specify the ordering of the result set here |
| 05:26 | Since we need a history of the books issued, we will order it chronologically. |
| 05:34 | Meaning we will sort the result set by the Issue Date in ascending order. |
| 05:43 | For this, we will click on the empty cell in the Sort row, under the Issuedate field.
And let us click on ‘Ascending’. |
| 05:56 | Okay, we will go to the next row - ‘Visible’ |
| 06:02 | Here we can set the visibility of the fields we selected by checking or un-checking them. |
| 06:11 | Notice that, by default, all of them are checked. |
| 06:17 | Next, we will go to the ‘Function’ row.
This is used to create complex queries. We will skip this for now. |
| 06:27 | and we will go to the ‘Criterion’ row. |
| 06:32 | This is where we can limit the result set to a simple or complex set of criteria. |
| 06:40 | For example, we can query for those books only, which were issued but have not been returned by members, |
| 06:49 | meaning, only those that are not checked in. |
| 06:54 | So let us click on the empty cell in this row, under the CheckedIn field
and type in ‘Equals Zero’. |
| 07:06 | Thats it, let us run this query now. |
| 07:10 | We can use the keyboard shortcut F5, or click on the Edit menu at the top of the window,
and then click on ‘Run Query’ at the bottom. |
| 07:27 | Can you see some data in the upper half of the window? |
| 07:32 | These are the results of your query. |
| 07:36 | Notice that, we see a history of books issued to members and ordered by Issue Date.
Also notice that none of the books are checked in. |
| 07:51 | Now we can go to the query design area below and change it any way we want . |
| 08:00 | For example, let us remove the Checked In criterion. <pause> |
| 08:07 | Now let us run the query by pressing F5 again. |
| 08:15 | This time we see a longer list of data returned from the query. |
| 08:23 | Next, let us save this query, by pressing Control S. This opens a small popup window. |
| 08:34 | Let us give a descriptive name to our query here. |
| 08:38 | Let us type ‘History of Books Issued to Members’ |
| 08:46 | and then click on Ok button. and close this window. |
| 08:52 | We can open this saved query by double clicking on the query name in the main Base window. |
| 09:01 | So there, we have successfully created a query using the Design View |
| 09:09 | Here is an assignment: |
| 09:12 | Generate a list of the books issued to the member Nisha Sharma.
The list should be chronological by Issue date. |
| 09:24 | This brings us to the end of this tutorial on Creating Queries in Design View in LibreOffice Base |
| 09:31 | To summarize, we learned how to: |
| 09:33 | Create a query by using the Design View.
Add tables to the Query Design window Select fields |
| 09:41 | Set up aliases,
Set up sorting order And provide search criteria for a query. |
| 09:49 | Spoken Tutorial Project is a part of the Talk to a Teacher project, supported by the National Mission on Education through ICT, MHRD, Government of India. This project is co-ordinated by http://spoken-tutorial.org. More information on the same is available at the following link |
| 10:10 | This script has been contributed by Priya Suresh, DesiCrew Solutions, and this is Soundharya DesiCrew solutions, signing off. Thanks for joining.
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