Understanding how data tables relate to one another is a critical component to creating well structured queries that give meaningful results. Modifying the join type between tables in a query ensures that all of the records in the parent table are visible, whether they have related information in the child table or not.
- [Voiceover] When creating queries that…include multiple tables,…it's important to understand how…those tables are related in order…to get meaningful results.…Typically, Access will be able to assist you…when building these relationships that…they've not already been previously defined.…But there are occasions when you'll…need to create or modify how your tables…are joined together.…Let's take a look at a couple of examples,…but first I want to review underneath…the Database Tools the relationships…as they currently exist in this database.…Right now we have a relationship…between the Customers and the Orders table…and another relationship between the…Customers and the States table.…
Let's see what happens if we were to delete…these relationships.…I'm going to right click on each of these lines…and just press the delete option and…say yes to that and we'll do it again,…right click + delete and yes to that.…Now let's go ahead and close out the relationships…and start building a query based off of those tables.…I'll choose the Customers table here,…
- Creating a query with the wizard
- Defining query criteria
- Using comparison and wildcards in criteria
- Working with joins
- Creating parameter queries
- Using the built-in functions in Access
- Summarizing data
- Aggregating records with totals
- Working with dates
- Creating alternative queries: unmatched, crosstab, and more
- Writing queries with SQL
Skill Level Intermediate
1. Introduction to Access Queries
2. Creating Simple Select Queries
3. Creating Parameter Queries
4. Use the Built-In Functions
5. Aggregating Records with a Totals Query
6. Working with Dates in Queries
7. Understanding Program Flow Functions
8. Alternative Query Types
9. Writing Queries with Structured Query Language
Explore the basics of SQL5m 59s
10. Useful Query Tricks
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