SQL Guide Chapter 4

Chapter 4 deals with SQL Commands like

• Search Statements:
• Wild Cards allow a user to search for data that starts or end with a certain character (%n or _t)
• Comparisons like less than or equal to (x>=y, x=y, x<>y means not equal to)
• Input and Retrieve Data:
• "Insert" obviously inserts data
• "Select" chooses a column
•  "Where" can be used to specify certain data (WHERE x=y)
• "From" can be used to specify a table
• "And", "Or", "Between", and "Not" can be used to make more complex statements with more restrictions

I still don't understand some things so I will probably have to review some of the book because I think it was fairly simple and then it got a bit complex quickly.