SQLite HAVING
SQLite HAVING子句用于指定条件，该条件过滤哪些组结果出现在最终结果中。 WHERE子句在所选列上放置条件，而HAVING子句在GROUP BY子句创建的组上放置条件。
HAVING子句在SELECT查询中的位置:
SELECT
FROM
WHERE
GROUP BY
HAVING
ORDER BY
语法:
SELECT column1, column2
FROM table1, table2
WHERE [ conditions ]
GROUP BY column1, column2
HAVING [ conditions ]
ORDER BY column1, column2
示例:
让我们以一个示例来演示HAVING子句。我们有一个名为" STUDENT"的表，其中包含以下数据:
示例1:
显示名称计数少于2的所有记录:
SELECT * FROM STUDENT GROUP BY NAME HAVING COUNT(NAME) < 2;
输出:
示例2:
显示名称计数大于2的所有记录:
SELECT * FROM STUDENT GROUP BY NAME HAVING COUNT(NAME) > 2;
输出:
