" and is used to compare whether two values ​​are equal and return TRUE or FALSE. For example, SELECT product_id, product_name FROM products WHERE product_price <> 10 returns products whose price is not equal to 10."/> " and is used to compare whether two values ​​are equal and return TRUE or FALSE. For example, SELECT product_id, product_name FROM products WHERE product_price <> 10 returns products whose price is not equal to 10.">
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HomeDatabaseOracleHow to express not equal in Oracle

Oracle 中的不等于操作符用“”表示,用于比较两个值是否不相等,返回 TRUE 或 FALSE。例如,SELECT product_id, product_name FROM products WHERE product_price a8093152e673feb7aba1828c43532094 10返回价格不等于 10 的产品。

How to express not equal in Oracle

Oracle 中的不等于操作符

在 Oracle 中,不等于操作符表示两个值不相等。它使用符号“”表示。

语法:

<code>expr1  expr2</code>

参数:

  • expr1:要比较的第一个表达式。
  • expr2:要比较的第二个表达式。

结果:

如果 expr1 不等于 expr2,则返回 TRUE;否则返回 FALSE。

示例:

SELECT product_id, product_name
FROM products
WHERE product_price <> 10;

此查询返回产品表中产品价格不等于 10 的产品。

注意:

  • 不等于操作符与“!=”操作符相同,但使用“”更为常见。
  • 也可以使用 NOT EQUAL 关键字来表示不等于,例如:
SELECT product_id, product_name
FROM products
WHERE NOT product_price = 10;

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