SQL
语法
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 (函数条件)
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}
DeleteFrom
DELETE FROM "表格名"
WHERE {条件}