MySQL是一款常用的數(shù)據(jù)庫(kù)管理系統(tǒng)，具有廣泛的應(yīng)用。MySQL支持非常靈活的查詢語(yǔ)句，可以根據(jù)不同的需要進(jìn)行特殊查詢。以下是一些MySQL特殊查詢案例，供參考。

1. 查詢兩張表中不共有的數(shù)據(jù)

SELECT column_name1,column_name2
FROM table_name1
WHERE column_name1 NOT IN
(SELECT column_name1 FROM table_name2);

2. 分組統(tǒng)計(jì)

SELECT column_name, COUNT(column_name) AS column_count
FROM table_name
GROUP BY column_name;

3. 連接查詢

SELECT table_name1.column_name1, table_name2.column_name2
FROM table_name1
INNER JOIN table_name2 ON table_name1.column_name1 = table_name2.column_name1;

4. 相關(guān)子查詢

SELECT column_name1, column_name2,
(SELECT column_name3 FROM table_name2 WHERE column_name4=column_name1)
FROM table_name1;

5. 模糊查詢

SELECT column_name
FROM table_name
WHERE column_name LIKE '%內(nèi)容%';

6. 排序

SELECT column_name1, column_name2
FROM table_name
ORDER BY column_name1 DESC;

以上是一些MySQL特殊查詢案例的示例，不同的數(shù)據(jù)庫(kù)應(yīng)用場(chǎng)景下，還可以進(jìn)行更加多樣化的查詢操作。因此，對(duì)查詢語(yǔ)句的掌握和理解十分重要。