mysql - 如何从sql表或sql数据库中导出所有单词

Question

假设我们有下表。

UserId | Message-------|-------------1      | Hi, have a nice day2      | Hi, I had a nice day

我需要将所有 { Hi,-have-a-nice-day-I-had } 字分开。有什么办法吗？如果我想从整个数据库表中导出单词怎么办？

类似的结果也不错。

Answer 1

试试这个:在 Sql server 2005 或以上

create table yourtable(RowID int, Layout varchar(200))
INSERT yourtable VALUES (1,'hello,world,welcome,to,tsql')
INSERT yourtable VALUES (2,'welcome,to,stackoverflow')


;WITH SplitSting AS
(
    SELECT
        RowID,LEFT(Layout,CHARINDEX(',',Layout)-1) AS Part
            ,RIGHT(Layout,LEN(Layout)-CHARINDEX(',',Layout)) AS Remainder
        FROM YourTable
        WHERE Layout IS NOT NULL AND CHARINDEX(',',Layout)>0
    UNION ALL
    SELECT
        RowID,LEFT(Remainder,CHARINDEX(',',Remainder)-1)
            ,RIGHT(Remainder,LEN(Remainder)-CHARINDEX(',',Remainder))
        FROM SplitSting
        WHERE Remainder IS NOT NULL AND CHARINDEX(',',Remainder)>0
    UNION ALL
    SELECT
        RowID,Remainder,null
        FROM SplitSting
        WHERE Remainder IS NOT NULL AND CHARINDEX(',',Remainder)=0
)
SELECT part FROM SplitSting ORDER BY RowID

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