Join Bill Weinman for an in-depth discussion in this video Filtering data with WHERE, LIKE, and IN, part of SQL Essential Training.
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Most of the time when you're getting data from a table.…You're looking for specific data.…Data that fits a specific criteria.…The where clause gives you just the tools you need.…To get just the rows you're looking for instead of the entire table.…For this lesson we're going to use the world dot db database.…And we're going to use the country table, which looks like this.…And you can see it's a pretty big table.…It has a lot of rows and columns.…It says here we got 239 rows from that query.…Now if you just want to know which countries have a population.…
Under 100,000, it's easy to construct a query like this.…I would say, select, and I'll just pick a few of the columns here.…Say, name, continent, and population.…And I'm going to add a where clause before…the semicolon here, where population is less than 100000.…And I'm going to give it a sort order over here.…Order by population descending.…
I'll show you more about the order clause later.…And we'll go ahead and run this query.…And you see there's the results of our query, now…
- Understanding SQL terminology and syntax
- Creating new tables and records
- Inserting and updating data
- Writing basic SQL queries
- Sorting and filtering
- Accessing related tables with JOIN
- Working with strings
- Finding the numeric type of a value
- Using aggregate functions and transactions
- Updating a table with triggers
- Creating views
Skill Level Beginner
1. SQL Quick Start
Understanding joins2m 23s
Dates and times1m 59s
10. Subselects and Views
11. A Simple CRUD Application
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