mysql 中between写法

可以回答这个问题，MySQL 中 between 的写法是用于判断一个值是否在某个范围之内的关键字，示例语法为：SELECT * FROM table_name WHERE column_name BETWEEN value1 AND value2。其中，column_name是检索的列名，value1和value2是范围的起始和结束值。

相关问题

mysql同环比写法

MySQL同环比的写法可以通过使用子查询和自连接来实现。具体实现方法如下：

同比：

SELECT t1.date, t1.value, t2.value AS last_year_value, (t1.value - t2.value) / t2.value AS yoy
FROM table_name t1
LEFT JOIN table_name t2 ON DATE_SUB(t1.date, INTERVAL 1 YEAR) = t2.date
WHERE t1.date BETWEEN '2020-01-01' AND '2020-12-31'

环比：

SELECT t1.date, t1.value, t2.value AS last_month_value, (t1.value - t2.value) / t2.value AS mom
FROM table_name t1
LEFT JOIN table_name t2 ON DATE_SUB(t1.date, INTERVAL 1 MONTH) = t2.date
WHERE t1.date BETWEEN '2020-01-01' AND '2020-12-31'

其中，`table_name`为你的数据表名，`date`为日期列名，`value`为需要计算同环比的数值列名。

mysql cte写法

MySQL不支持CTE（公共表表达式）写法，但是可以使用子查询或者临时表来实现类似的功能。

子查询写法：

SELECT *
FROM (
  SELECT col1, col2, ROW_NUMBER() OVER (ORDER BY col1) as row_num
  FROM table1
  WHERE col1 > 100
) t
WHERE t.row_num BETWEEN 10 AND 20;

临时表写法：

CREATE TEMPORARY TABLE temp_table
SELECT col1, col2
FROM table1
WHERE col1 > 100;

SELECT *
FROM (
  SELECT col1, col2, ROW_NUMBER() OVER (ORDER BY col1) as row_num
  FROM temp_table
) t
WHERE t.row_num BETWEEN 10 AND 20;

DROP TEMPORARY TABLE temp_table;