初级sql select语法[MSSQL防范]

sql select语法是sql语言中最底子的语法,下面就将为您介绍sql select语法,供您参考,假如您是才接触SQL数据库的新手,无妨一看,相信对您学习sql select语法会有所帮忙.

SQL查询: SELECT

普通查询:

SELECT "栏位名" FROM "表格名"

DISTINCT 查询:(去掉反复)

SELECT DISTINCT "栏位名" FROM "表格名"

WHERE 条件查询:

SELECT "栏位名" FROM "表格名" WHERE "条件"

AND 或是 OR 多条件查询:

SELECT "栏位名" FROM "表格名" WHERE "简单条件" {[AND|OR] "简单条件"}+ {}+代表{}之内的情形会发生一或多次.在这里的意思就是 AND 加简单条件及 OR加简单条件的情形可以发生一或多次.别的,我们可以用 () 来代表条件的先后次序.

IN 查询:

SELECT "栏位名" FROM "表格名" WHERE "栏位名" IN ('值一', '值二', ...)

BETWEEN 查询:

SELECT "栏位名" FROM " 表格名" WHERE "栏位名" BETWEEN '值一' AND '值二'

LIKE 查询:(模糊查询)

SELECT "栏位名" FROM "表格名" WHERE "栏位名" LIKE {套式}

ORDER BY 查询:（排序）

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

SELECT store_name, Sales, Date FROM Store_Information ORDER BY 2 DESC

这两句效果相同!