doris sql语法
DorisSQL语法是DorisDB数据库的查询语言,它类似于传统的SQL语言,但也有一些不同之处。下面是一些Doris SQL语法的常见用法:
1. 创建表格
CREATE TABLE table_name (
column1 datatype,
column2 datatype,
column3 datatype,
....
);
2. 插入数据
INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
3. 更新数据
UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;doris
4. 删除数据
DELETE FROM table_name
WHERE condition;
5. 查询数据
SELECT column1, column2, ...
FROM table_name
WHERE condition;
6. 聚合函数
SELECT COUNT(column_name) FROM table_name;
SELECT AVG(column_name) FROM table_name;
SELECT SUM(column_name) FROM table_name;
SELECT MAX(column_name) FROM table_name;
SELECT MIN(column_name) FROM table_name;
7. 连接
SELECT column_name(s)
FROM table1
INNER JOIN table2
lumn_name = lumn_name;
8. 子查询
SELECT column_name(s)
FROM table_name
WHERE column_name IN (SELECT column_name FROM table_name WHERE condition);
以上是Doris SQL语法的一些常见用法,可以帮助用户更好地操作DorisDB数据库。
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