sql server语句
时间: 2023-09-26 15:08:37 浏览: 29
1. 创建表:
CREATE TABLE table_name (
column1 datatype constraints,
column2 datatype constraints,
...
);
2. 插入数据:
INSERT INTO table_name (column1, column2, ...)
VALUES (value1, value2, ...);
3. 更新数据:
UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;
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. 连接表:
SELECT column1, column2, ...
FROM table1
INNER JOIN table2
ON table1.column = table2.column;
7. 分组聚合:
SELECT column1, COUNT(column2)
FROM table_name
GROUP BY column1;
8. 排序:
SELECT column1, column2, ...
FROM table_name
ORDER BY column1 ASC/DESC;
9. 聚合函数:
SELECT COUNT(*), SUM(column1), AVG(column2), MAX(column3), MIN(column4)
FROM table_name;
10. 子查询:
SELECT column1, column2, ...
FROM table_name
WHERE column1 IN (SELECT column1 FROM table_name2 WHERE condition);
11. 视图:
CREATE VIEW view_name AS
SELECT column1, column2, ...
FROM table_name
WHERE condition;
12. 存储过程:
CREATE PROCEDURE procedure_name
AS
BEGIN
-- statements
END;
13. 触发器:
CREATE TRIGGER trigger_name
ON table_name
AFTER INSERT, UPDATE, DELETE
AS
BEGIN
-- statements
END;
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