From the course: MySQL Data Analysis
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Selecting specific columns - MySQL Tutorial
From the course: MySQL Data Analysis
Selecting specific columns
- [Instructor] Sometimes you might want to select data from a table, but you don't need all of the columns. I'm going to walk you through how you select specific columns from a table now. You can return one or more specific columns by naming them explicitly in your select statement. To select data from multiple columns, you'll separate the column names with a comma. Here's a pro tip, use line breaks and indentation to make sure that your code is human readable. This won't matter when your queries are very simple, but as you get more advanced and start writing more and more complex SQL queries, this will become more important for you. Here's an example of selecting two columns from our rental table. Go ahead and take this query and type it into your MySQL Workbench interface. Notice how I've broken my query into multiple lines with the select and the from furthest to the left and then used indentation for the various column names. This makes it really easy for you or anyone else…
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Contents
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Introduction24s
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Getting to know the database3m 52s
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The Big 62m 18s
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The SELECT statement47s
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The FROM clause39s
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SELECT * FROM6m
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The USE statement3m 19s
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Selecting specific columns4m 18s
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Challenge: SELECT and FROM1m 24s
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Solution: SELECT and FROM2m 38s
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SELECT DISTINCT2m 13s
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Challenge: SELECT DISTINCT38s
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Solution: SELECT DISTINCT2m
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The WHERE clause1m 30s
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Common WHERE operators4m 59s
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Challenge: The WHERE clause35s
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Solution: The WHERE clause2m 23s
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Combining WHERE and AND4m 22s
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Challenge: WHERE and AND39s
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Solution: WHERE and AND1m 37s
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Combining WHERE and OR3m 38s
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Challenge: Combining WHERE and OR42s
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Solution: Combining WHERE and OR3m 21s
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Combining WHERE and IN4m 35s
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The LIKE operator2m 37s
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LIKE wildcard examples5m 6s
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Challenge: The LIKE operator30s
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Solution: The LIKE operator2m 28s
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The GROUP BY clause1m 43s
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GROUP BY example3m 18s
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Pro Tip: Using comments and aliases5m 32s
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Challenge: GROUP BY37s
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Solution: GROUP BY2m 1s
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Multiple dimension GROUP BY clauses3m 14s
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Aggregate functions2m 8s
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Challenge: Aggregate functions55s
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Solution: Aggregate functions3m 23s
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The HAVING clause1m 44s
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HAVING example2m 54s
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Challenge: The HAVING clause54s
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Solution: The HAVING clause3m 11s
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The ORDER BY clause1m 31s
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ORDER BY example4m 16s
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Challenge: The ORDER BY clause30s
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Solution: The ORDER BY clause1m 47s
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Recap: The Big 62m 8s
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