SQL句法


SQL SELECT
SQL DISTINCT
SQL WHERE
SQL AND OR
SQL IN
SQL BETWEEN
SQL LIKE
SQL ORDER BY
SQL 函数
SQL COUNT
SQL GROUP BY
SQL HAVING
SQL ALIAS
SQL 表格连接
SQL 外部连接
SQL Subquery
SQL UNION
SQL UNION ALL
SQL INTERSECT
SQL MINUS
SQL CONCATENATE
SQL SUBSTRING
SQL TRIM

SQL CREATE TABLE
SQL CREATE VIEW
SQL CREATE INDEX
SQL ALTER TABLE
SQL 主键
SQL 外来键
SQL DROP TABLE
SQL TRUNCATE TABLE
SQL INSERT INTO
SQL UPDATE
SQL DELETE FROM







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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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