📄 exp_168.htm

📁 oracle　DBA的资料

💻 HTM

字号:

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>Ocp test </title>
</head>
<body bgcolor="white" text="black" link="blue" vlink="purple" alink="red">
<p><b><span style="font-size:22pt">Explaination 168: &nbsp;</span></b></p>

<span style="font-size:18pt">
	<p>
	subquery can retrieve zero or more rows, subquery is used with an inequality camparison operator in the outer SQL statement, the column list in the SELECT clause of the subquery should contain only one column. <br>
	</p>

	<p>
	  Incorrect answer : <br>
	</p>

	<p>
	  A subquery can retrieve zero or more rows <br>
	</p>

	<p>
	  C subquery is not SQL query statement <br>
	</p>

	<p>
	  D subquery can be nested <br>
	</p>

	<p>
	  E group function can be use with subquery
	</p>

</span>

</body>
</html>

⌨️ 快捷键说明

复制代码 Ctrl + C

搜索代码 Ctrl + F

全屏模式 F11

切换主题 Ctrl + Shift + D

显示快捷键 ?

增大字号 Ctrl + =

减小字号 Ctrl + -