HAVING子句允許指定條件，過濾分組結果將出現在最終結果。

WHERE子句所選列的條件，而HAVING子句條件由GROUP BY子句創建分組。

語法

以下是HAVING子句的SELECT查詢中的位置：

SELECT
FROM
WHERE
GROUP BY
HAVING
ORDER BY

HAVING子句必須遵循在GROUP BY子句中的查詢，也必須先如果使用ORDER BY子句。以下是SELECT語句的語法，包括HAVING子句：

SELECT column1, column2
FROM table1, table2
WHERE [ conditions ]
GROUP BY column1, column2
HAVING [ conditions ]
ORDER BY column1, column2

例子：

考慮COMPANY表有以下記錄：

ID          NAME        AGE         ADDRESS     SALARY
----------  ----------  ----------  ----------  ----------
1           Paul        32          California  20000.0
2           Allen       25          Texas       15000.0
3           Teddy       23          Norway      20000.0
4           Mark        25          Rich-Mond   65000.0
5           David       27          Texas       85000.0
6           Kim         22          South-Hall  45000.0
7           James       24          Houston     10000.0
8           Paul        24          Houston     20000.0
9           James       44          Norway      5000.0
10          James       45          Texas       5000.0

下麵的例子，這將顯示記錄名稱計數小於2：

sqlite > SELECT * FROM COMPANY GROUP BY name HAVING count(name) < 2;

這將產生以下結果:

ID          NAME        AGE         ADDRESS     SALARY
----------  ----------  ----------  ----------  ----------
2           Allen       25          Texas       15000
5           David       27          Texas       85000
6           Kim         22          South-Hall  45000
4           Mark        25          Rich-Mond   65000
3           Teddy       23          Norway      20000

以下的例子，它會顯示名稱數量大於2的記錄：

sqlite > SELECT * FROM COMPANY GROUP BY name HAVING count(name) > 2;

這將產生以下結果:

ID          NAME        AGE         ADDRESS     SALARY
----------  ----------  ----------  ----------  ----------
10          James       45          Texas       5000