EC common SQL finishing

Reading list:

　　1. Update the name of the follower
　　2. Create a comparison table for the customer table
　　3. Query duplicate customers (total)
　　4. Query duplicate customers (five persons)

 

1. Update the name of the follower

UPDATE g_ec_customer
SET follow_user_name = (
    CASE follow_user_id
    WHEN '6582553' THEN
        '廖梓秀'
    WHEN '6582564' THEN
        '刘琪燕'
    WHEN '6624924' THEN
        '陈欣蕾'
    WHEN '6624972' THEN
        '袁良'
    WHEN '7166053' THEN
        '刘虎'
    WHEN '7166071'  THEN 
        ' Lin Longfei ' 
    WHEN  ' 7166183 '  THEN 
        ' Chen Liguo ' 
    WHEN  ' 7240909 '  THEN 
        ' Square Lei ' 
    WHEN  ' 7240941 '  THEN 
        ' Wang Kaisheng ' 
    WHEN  ' 7360237 '  THEN 
        ' Li Na ' 
  WHEN  ' 7360262 '  THEN 
        ' Cheng Huizi ' 
    END 
);

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2. Create a comparison table for the customer table

CREATE TABLE g_ec_dist AS (
    SELECT
        t.follow_user_name,
        t.crm_id,
        t.`name`,
        t.mobile,
        t.create_time
    FROM
        g_ec_customer t
    WHERE
        t.create_time <= '2018-04-30 23:59:59'
    AND t.follow_user_name != ''
    AND t.follow_user_name IS NOT NULL 
    ORDER BY
        t.follow_user_name,
        t.create_time
);

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3. Query duplicate customers (total)

SELECT
    t.follow_user_name,
    t.crm_id,
    t.`name`,
    t.mobile,
    t.create_time,
    t2.follow_user_name,
    t2.crm_id,
    t2.`name`,
    t2.mobile,
    t2.create_time
FROM
    g_ec_customer t, g_ec_dist t2
WHERE t.`name` = t2.mobile
AND t.create_time != t2.create_time
AND t.create_time <= '2018-04-30 23:59:59'
AND t.follow_user_name != ''
AND t.follow_user_name IS NOT NULL
AND t.follow_user_name != t2.follow_user_name
ORDER BY t.follow_user_name,t.create_time;

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4. Query duplicate customers (five people)

SELECT
    t.follow_user_name,
    t.crm_id,
    t.`name`,
    t.mobile,
    t.create_time,
    t2.follow_user_name,
    t2.crm_id,
    t2.`name`,
    t2.mobile,
    t2.create_time
FROM
    g_ec_customer t, g_ec_dist t2
WHERE t.`name` = t2.mobile
AND t.create_time != t2.create_time
AND t.create_time <= '2018-04-30 23:59:59'
AND t.follow_user_name != ''
AND t.follow_user_name IS NOT NULL
AND t.follow_user_name != t2.follow_user_name
AND (t.follow_user_name IN ('方磊','汪开胜','陈立国','刘虎', ' Lin Longfei ' ) OR t2.follow_user_name IN ( ' Fang Lei ' , ' Wang Kaisheng ' , ' Chen Liguo ' , ' Liu Hu ' , ' Lin Longfei ' ))
 ORDER BY t.follow_user_name ,t.create_time; 

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