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SQL语句教程-------SQL语法

2007-08-08 09:01 323 查看
SQL语句教程-------SQL语法
在这一页中，我们列出所有在这个网站有列出 SQL 指令的语法。若要更详尽的说明，请点选指令名称。

这一页的目的是提供一个简洁的 SQL 语法做为读者参考之用。我们建议您现在就按 Control-D 将本页加入您的『我的最爱』。

Select
SELECT "栏位" FROM "表格名"

Distinct
SELECT DISTINCT "栏位"
FROM "表格名"

Where
SELECT "栏位"
FROM "表格名"
WHERE "condition"

And/Or
SELECT "栏位"
FROM "表格名"
WHERE "简单条件"
{[AND|OR] "简单条件"}+

In
SELECT "栏位"
FROM "表格名"
WHERE "栏位" IN ('值1', '值2', ...)

Between
SELECT "栏位"
FROM "表格名"
WHERE "栏位" BETWEEN '值1' AND '值2'

Like
SELECT "栏位"
FROM "表格名"
WHERE "栏位" LIKE {模式}

Order By
SELECT "栏位"
FROM "表格名"
[WHERE "条件"]
ORDER BY "栏位" [ASC, DESC]

Count
SELECT COUNT("栏位")
FROM "表格名"

Group By
SELECT "栏位1", SUM("栏位2")
FROM "表格名"
GROUP BY "栏位1"

Having
SELECT "栏位1", SUM("栏位2")
FROM "表格名"
GROUP BY "栏位1"
HAVING (栏位)

Create Table
CREATE TABLE "表格名"
("栏位 1" "栏位 1 资料种类",
"栏位 2" "栏位 2 资料种类",
... )

Drop Table
DROP TABLE "表格名"

Truncate Table
TRUNCATE TABLE "表格名"

Insert Into
INSERT INTO "表格名" ("栏位1", "栏位2", ...)
VALUES ("值1", "值2", ...)

Update
UPDATE "表格名"
SET "栏位1" = [新值]
WHERE {条件}

Delete From
DELETE FROM "表格名"
WHERE {条件}

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