Question

我是T-SQL的新手，我有一个要求，即我必须使用功能或存储过程在SQL Server中生成数百万个唯一的随机伪造电子邮件ID。

使用JAVA，我创建了一个程序，该程序可以生成50个唯一的电子邮件ID（如下所述），但是我希望在SQL Server中使用相同的程序。

您能协助我如何使用T-SQL进行实施吗？任何帮助将不胜感激。

package com.ing.tdm;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.StringTokenizer;

import org.apache.commons.lang3.RandomStringUtils;

public class EmailGenerator {

    public static String getEmailDomains(){
         String randomElement = "";
        String strOfEmailDomains = "aol.com, att.net, comcast.net, facebook.com, gmail.com, gmx.com, googlemail.com, google.com, hotmail.com, hotmail.co.uk, mac.com, me.com, mail.com, msn.com, live.com, sbcglobal.net, verizon.net, yahoo.com, yahoo.co.uk, email.com, fastmail.fm, games.com, gmx.net, hush.com, hushmail.com, icloud.com, iname.com, inbox.com, lavabit.com, love.com , outlook.com, pobox.com, protonmail.com, rocketmail.com, safe-mail.net, wow.com , ygm.com , ymail.com, zoho.com, yandex.com, bellsouth.net, charter.net, cox.net, earthlink.net, juno.com, btinternet.com, virginmedia.com, blueyonder.co.uk, freeserve.co.uk, live.co.uk, ntlworld.com, o2.co.uk, orange.net, sky.com, virgin.net, wanadoo.co.uk, bt.com, sina.com, sina.cn, qq.com, naver.com, hanmail.net, daum.net, nate.com, yahoo.co.jp, yahoo.co.kr, yahoo.co.id, yahoo.co.in, yahoo.com.sg, yahoo.com.ph, 163.com, 126.com, aliyun.com, foxmail.com, hotmail.fr, live.fr, laposte.net, yahoo.fr, wanadoo.fr, orange.fr, gmx.fr, sfr.fr, neuf.fr, free.fr, gmx.de, hotmail.de, live.de, online.de, t-online.de , web.de, yahoo.de, libero.it, virgilio.it, hotmail.it, aol.it, tiscali.it, alice.it, live.it, yahoo.it, email.it, tin.it, poste.it, teletu.it, mail.ru, rambler.ru, yandex.ru, ya.ru, list.ruhotmail.be, live.be, skynet.be, voo.be, tvcablenet.be, telenet.be, hotmail.com.ar, live.com.ar, yahoo.com.ar, fibertel.com.ar, speedy.com.ar, arnet.com.ar, yahoo.com.mx, live.com.mx, hotmail.es,yahoo.com.ar, fibertel.com.ar, speedy.com.ar, arnet.com.ar, yahoo.com.mx, live.com.mx, hotmail.es, hotmail.com.mx, prodigy.net.mx, yahoo.com.br, hotmail.com.br, outlook.com.br, uol.com.br, bol.com.br, terra.com.br, ig.com.br, itelefonica.com.br, r7.com, zipmail.com.br, globo.com, globomail.com, oi.com.br";
        StringTokenizer st = new StringTokenizer(strOfEmailDomains, ",");
        Random rand = new Random();

        List<String> givenList = new ArrayList<String>();

        while(st.hasMoreElements()){
            String emaildomain = (String) st.nextElement();
            givenList.add(emaildomain);
        }

        if(null!=givenList && givenList.size() > 0){
            int randomIndex = rand.nextInt(givenList.size());
              randomElement = givenList.get(randomIndex);
        }

        return randomElement;

    }


public static String generateRandomEmail(int length) {
    String emailId = "";
    String allowedChars = "abcdefghijklmnopqrstuvwxyz" + "1234567890";
    String allowedSpecialChars = "_-.";

    String temp = RandomStringUtils.random(length, allowedChars);
    emailId = (temp.substring(0, temp.length() - 9)
            +Character.toString((RandomStringUtils.random(length, allowedSpecialChars)).charAt(0))
            +temp.substring(12, 18)
            +"@"+getEmailDomains()).replaceAll("\\s","");

    System.out.println(emailId);
    return emailId;
}

public static void main(String[] args) {
    for (int i = 0; i < 50; i++) {
        generateRandomEmail(20);
    }
}

}

Answer 1

如果您真的想使用SQL进行此操作，请尝试以下方法之一...

DECLARE @randomString VARCHAR(255)
SELECT
  @randomString = CONVERT(VARCHAR(255), NEWID())
PRINT @randomString

OR

DECLARE @Length INT = 25
PRINT LEFT(REPLACE(NEWID(), '-', ''), @Length)

Answer 2

您可以将CROSS JOIN与NEWID()一起生成大量电子邮件地址。这一次一次生成30k +电子邮件，直到达到或超过目标数量-大约需要一秒钟才能达到1019304个电子邮件地址（演示：http://rextester.com/GJS41165）

DECLARE @targetCount INT = 1000000

CREATE TABLE #emailTableTemp (fakeEmail VARCHAR(100))

WHILE (SELECT COUNT(1) FROM #emailTableTemp) < @targetCount
BEGIN
    INSERT INTO #emailTableTemp
    SELECT CONCAT(t2.prefix,t1.email) AS fakeEmail FROM 
    (VALUES ('aol.com'),('att.net'),('comcast.net'),('facebook.com'),('gmail.com'),('gmx.com'),('googlemail.com'),('google.com'),('hotmail.com'),('hotmail.co.uk'),('mac.com'),('me.com'),('mail.com'),('msn.com'),('live.com'),('sbcglobal.net'),('verizon.net'),('yahoo.com'),('yahoo.co.uk'),('email.com'),('fastmail.fm'),('games.com'),('gmx.net'),('hush.com'),('hushmail.com'),('icloud.com'),('iname.com'),('inbox.com'),('lavabit.com'),('love.com '),('outlook.com'),('pobox.com'),('protonmail.com'),('rocketmail.com'),('safe-mail.net'),('wow.com '),('ygm.com '),('ymail.com'),('zoho.com'),('yandex.com'),('bellsouth.net'),('charter.net'),('cox.net'),('earthlink.net'),('juno.com'),('btinternet.com'),('virginmedia.com'),('blueyonder.co.uk'),('freeserve.co.uk'),('live.co.uk'),('ntlworld.com'),('o2.co.uk'),('orange.net'),('sky.com'),('virgin.net'),('wanadoo.co.uk'),('bt.com'),('sina.com'),('sina.cn'),('qq.com'),('naver.com'),('hanmail.net'),('daum.net'),('nate.com'),('yahoo.co.jp'),('yahoo.co.kr'),('yahoo.co.id'),('yahoo.co.in'),('yahoo.com.sg'),('yahoo.com.ph'),('163.com'),('126.com'),('aliyun.com'),('foxmail.com'),('hotmail.fr'),('live.fr'),('laposte.net'),('yahoo.fr'),('wanadoo.fr'),('orange.fr'),('gmx.fr'),('sfr.fr'),('neuf.fr'),('free.fr'),('gmx.de'),('hotmail.de'),('live.de'),('online.de'),('t-online.de '),('web.de'),('yahoo.de'),('libero.it'),('virgilio.it'),('hotmail.it'),('aol.it'),('tiscali.it'),('alice.it'),('live.it'),('yahoo.it'),('email.it'),('tin.it'),('poste.it'),('teletu.it'),('mail.ru'),('rambler.ru'),('yandex.ru'),('ya.ru'),('list.ruhotmail.be'),('live.be'),('skynet.be'),('voo.be'),('tvcablenet.be'),('telenet.be'),('hotmail.com.ar'),('live.com.ar'),('yahoo.com.ar'),('fibertel.com.ar'),('speedy.com.ar'),('arnet.com.ar'),('yahoo.com.mx'),('live.com.mx'),('hotmail.es,yahoo.com.ar'),('fibertel.com.ar'),('speedy.com.ar'),('arnet.com.ar'),('yahoo.com.mx'),('live.com.mx'),('hotmail.es'),('hotmail.com.mx'),('prodigy.net.mx'),('yahoo.com.br'),('hotmail.com.br'),('outlook.com.br'),('uol.com.br'),('bol.com.br'),('terra.com.br'),('ig.com.br'),('itelefonica.com.br'),('r7.com'),('zipmail.com.br'),('globo.com'),('globomail.com'),('oi.com.br')) t1(email)
    CROSS JOIN (VALUES 
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
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        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
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        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
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        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),        
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),
        (CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@')),(CONCAT(REPLACE(CONVERT(VARCHAR(50), NEWID()),'-',''),'@'))
        ) t2(prefix)
END

SELECT COUNT(1) FROM #emailTableTemp
SELECT TOP 10 * FROM #emailTableTemp ORDER BY fakeEmail

DROP TABLE #emailTableTemp

Answer 3

嗨，我想出了一个更加困难的解决方案，但我认为它更适合您的需求。

我有三个临时表：

电子邮件保留所有具有ID的域的列表
allowedChar包含ID的所有字符的列表
allowedSpecialChar包含ID的所有特殊字符的列表

创建表格后，我使用递归cte 50行（如果需要，可以执行更多操作）生成带有随机电子邮件长度和mailid的表。然后，我为allowChar表中的每个id生成一个随机的id。然后，将生成的id与allowChar表连接起来，并在单行中用“ for xml path”连接单个字符。对于emailDomain和allowedSpecialChar，我几乎以相同的方式进行。最后，我将所有内容连接到一个有效的电子邮件地址。

CREATE TABLE Source
(
     [ID1] INT, 
     [ID2] INT
);

INSERT INTO Source ([ID1], [ID2]) 
VALUES (1, 2), (2, 3), (4, 5),
       (2, 5), (6, 7)

您还没有任何疑问吗？我帮你。

如何通过生成随机电子邮件地址。 SQL Server中的存储过程或函数

3 个答案: