1. Creating a Query to View, Change and Analyse Data
© EIT, Author Gay Robertson, 2017

2. What is a query …. A query allows us to analyse data in various ways
A query allows us to retrieve only the particular records that we want
A query can filter out (or hide) data that does NOT meet a criteria (value)
A query finds records using the criteria you key in. A query is saved and can be used over and over again
Let’s look at a few examples …..

3. We could produce a list of the Puketapu Fishing Club members who are paid over $10
We could produce a list of the family members
We could produce a list of the members who have paid their subs in the last six months
We could produce a list of the members who live in Napier

4. A query in a database is used to view, change and analyse data.

5. Where is the Query Wizard?
The database TABS organise all of the objects in the database
Make Queries your active object by clicking on the Query Wizard

6. About a query
A query is based on the fields in a table

7. The query can contain all of the fields in the table or some of the fields

8. Right – analyse the brief!!
Designing the query
Right – analyse the brief!!
When designing a query, you would look at the brief to analyse what the outcome needs to be

9. First thing to analyse – which fields need to be included?
The next thing is to decide what is the criteria or value that has to be matched?

10. How do you show more than? >
How do you show less than? <
These are known as Boolean operators < less than > more than = equal to <> not equal to >= more than or equal to <= less than or equal to

11. You can also use other characters
Like “NAPIER” must have the word NAPIER in the field
Like H* must start with the letter H but can have anything after the H
NAPIER and HASTINGS must have NAPIER and HASTINGS in the field
NAPIER or HASTINGS can have NAPIER or HASTINGS in the field

12. What else had to be included?

13. Okay – let’s look at the brief again. Yes – everything covered.
Go back to the brief and check that you have included everything needed
Yes – everything covered.

14. A query looks like this The table is shown
Then the query design which can include sorting and criteria

15. The query results can be seen in datasheet view

16. Now I am ready to begin creating my query – back to the workbook!!