摘要：
ObjectivesAfter completing this lesson,you should be able to do the following:Limit the rows that are retrieved by a query.Sort the rows that are retrieved by a query.Use ampersand substitution to restrict and sort output at run time.Lesson AgendaLimiting rows with:-The WHERE clause-The comparison c 阅读全文
摘要：
ObjectiveAfter completing this lesson,you should be able to do the following:List the capabilities of SQL statements.Execute a basic SELECT statementLesson AgendaBasic SELECT statementArithmetic expressions and NULL values in the SELECT statementColumn aliasesUse of concatenation operator,literal ch 阅读全文