Join Bill Weinman for an in-depth discussion in this video Creating tables, part of SQL Essential Training.
…Tables are created using the create table statement.…Here I'm using the in memory database.…So I've selected that there.…And I'm going to create a simple table.…Let's asy, create table and I will name it, test.…And I'm going to put up some parentheses.…And I'm going to close my parentheses and put in a semi-colon.…And then inside I'm going to specify what the table looks like.…This will have an integer called a.…And, these get separated with a comma.…
And a text column named b.…And because the comma is a separator.…And this is actually a strict requirement in the Create Table syntax,…I do not put a comma after the last column in the table.…Create table statements are normally formatted such that the…column declarations are each on a line by themselves.…So here we have one column.…And here we have another column.…This makes it easier to read, and it does not affect the functionality.…You could easily put all of this on one line and it would also work.…
It just wouldn't be as readable.…The part in between the parentheses is called the database schema.…
- 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
Q: For Mac OS X: When I try to start the Apache Web Server from the XAMPP control panel, it doesn't start, and when I open "localhost" in my web browser, I see a white screen that says "It Works!" instead of the XAMPP page.
sudo apachectl stop
Q: I'm on a Mac, and I get an error in SID that says "attempt to write a read only database." How can I fix this?
A: This usually means that the database folder does not have sufficient permissions for writing by the web user. This can happen if you create the SQL folder new, rather than copying it from the Exercise Files. Here's how to fix this:
- Open a Finder window and Navigate to /Applications/XAMPP/htdocs/SQL
- Control-click on the SQL folder and select "Get Info" from the context menu.
- Under "Sharing and Permissions" (you may need to open the disclosure triangle), in the "everyone" row, select "Read & Write."Then you can close the Info window.
- Now repeat the process for the three *.db files inside the folder.
1. SQL Quick Start
Understanding joins2m 23s
Dates and times1m 59s
10. Subselects and Views
11. A Simple CRUD Application
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