MySql 使用现有表中的列和另一个表中的不同查找创建新表答案

【问题标题】：MySql create new table with columns from an existing table and distinct lookup from another tableMySql 使用现有表中的列和另一个表中的不同查找创建新表
【发布时间】：2017-05-11 19:17:49
【问题描述】：

我在数据库中有 2 个现有表，即 Table_1 和 Table_2。

我需要将Table_1 和Table_2 的信息合并到一个名为Combined_table 的新表中。

Table_1 的列名和值可以直接复制到Combined_table。

然后，我需要添加名称包含在 Service Description 中的不同值上的列 Table_2。每个不同的值都必须成为添加到Combined_table 的列名。

这些新添加的列必须将它们各自的值添加到正确的行。每一行都可以通过所有表中可用的MSISDN 列来标识。

Table_1

|MSISDN        |Abar Date  |Upgrd |Pack Code |Tariff               |Avg Spend |SIM Number
|--------------|-----------|------|----------|---------------------|----------|---------------------|
|9602005689344 |18-Mar-15  |Y     |MDA       |Machine2Machine Data |32.56     |89490000000000001215 |
|9602005926494 |06-Feb-15  |Y     |MLT       |Machine2Machine Lite |27.38     |89490000000000004457 |
|9602005926509 |06-Feb-15  |Y     |MLT       |Machine2Machine Lite |10.1      |89490000000000045677 |
|9602005926524 |06-Feb-15  |Y     |MLT       |Machine2Machine Lite |31.77     |89490000000000002887 |
|9602005926539 |18-Mar-15  |Y     |MDA       |Machine2Machine Data |32.36     |94900000000000100212 |
|9602006330948 |11-Mar-16  |N     |MLT       |Machine2Machine Lite |4.39      |89460000000015600111 |
|9602006330950 |11-Mar-16  |N     |MLT       |Machine2Machine Lite |4.39      |89940000000000426577 |
|--------------|-----------|------|----------|---------------------|----------|---------------------|

Table_2

|MSISDN         |Service Description               |Value     |
|---------------|----------------------------------|----------|
|9602005689344  |100MB                             |25.44     |
|9602005689344  |Basic Data 9600                   |0.00      |
|9602005689344  |Basic Telephony                   |6.58      |
|9602005689344  |Ebilling - Corporate CD Extract   |0.00      |
|9602005689344  |Unrestricted APN                  |0.00      |
|9602005926494  |100MB                             |25.44     |
|9602005926494  |Basic Data 9600                   |0.00      |
|9602005926494  |Basic Telephony                   |4.39      |
|9602005926494  |Ebilling - Corporate CD Extract   |0.00      |
|9602005926494  |Unrestricted APN                  |0.00      |
|9602005926509  |Basic Data 9600                   |0.00      |
|9602005926509  |Basic Telephony                   |4.39      |
|9602005926509  |Ebilling - Corporate CD Extract   |0.00      |
|9602005926509  |My Meg 0                          |0.00      |
|9602005926509  |Unrestricted APN                  |0.00      |
|9602005926524  |100MB                             |25.44     |
|9602005926524  |Basic Data 9600                   |0.00      |
|9602005926524  |Basic Telephony                   |4.39      |
|9602005926524  |Ebilling - Corporate CD Extract   |0.00      |
|9602005926524  |Unrestricted APN                  |0.00      |
|9602005926539  |100MB                             |25.44     |
|9602005926539  |Basic Data 9600                   |0.00      |
|9602005926539  |Basic Telephony                   |6.58      |
|9602005926539  |Ebilling - Corporate CD Extract   |0.00      |
|9602005926539  |Unrestricted APN                  |0.00      |
|9602006330948  |Basic Data 9600                   |0.00      |
|9602006330948  |Basic Telephony                   |4.39      |
|9602006330948  |Caller Identity FREE              |0.00      |
|9602006330948  |Ebilling - Corporate CD Extract   |0.00      |
|9602006330948  |My Meg 0                          |0.00      |
|9602006330948  |Promotional My Gig 1 - 24 Months  |0.00      |
|9602006330948  |SMS Mobile Originating            |0.00      |
|9602006330948  |Unrestricted APN                  |0.00      |
|9602006330950  |Basic Data 9600                   |0.00      |
|9602006330950  |Basic Telephony                   |4.39      |
|9602006330950  |Caller Identity FREE              |0.00      |
|9602006330950  |Ebilling - Corporate CD Extract   |0.00      |
|9602006330950  |My Meg 0                          |0.00      |
|9602006330950  |Promotional My Gig 1 - 24 Months  |0.00      |
|9602006330950  |SMS Mobile Originating            |0.00      |
|9602006330950  |Unrestricted APN                  |0.00      |
|---------------|----------------------------------|----------|

Combined_table 的外观示例。

|MSISDN         |Abar Date  |Upgrd  |Pack   |Code Tariff            |Avg Spend  |SIM Number             |100MB  |Basic Data 9600    |Basic Telephony    |Caller Identity FREE   |Ebilling - Corporate CD Extract    |My Meg 0   |Promotional My Gig 1 - 24 Months   |SMS Mobile Originating |Unrestricted APN   |
|9602005689344  |18-Mar-15  |Y      |MDA    |Machine2Machine Data   |32.56      |89490000000000001215   |25.44  |0.00               |6.58               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |
|9602005926494  |06-Feb-15  |Y      |MLT    |Machine2Machine Lite   |27.38      |89490000000000004457   |25.44  |0.00               |4.39               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |
|9602005926509  |06-Feb-15  |Y      |MLT    |Machine2Machine Lite   |10.10      |89490000000000045677   |0.00   |0.00               |4.39               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |
|9602005926524  |06-Feb-15  |Y      |MLT    |Machine2Machine Lite   |31.77      |89490000000000002887   |25.44  |0.00               |4.39               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |
|9602005926539  |18-Mar-15  |Y      |MDA    |Machine2Machine Data   |32.36      |89490000000000100212   |25.44  |0.00               |6.58               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |
|9602006330948  |11-Mar-16  |N      |MLT    |Machine2Machine Lite   |4.39       |89460000000015600111   |0.00   |0.00               |4.39               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |
|9602006330950  |11-Mar-16  |N      |MLT    |Machine2Machine Lite   |4.39       |89940000000000426577   |0.00   |0.00               |4.39               |0.00                   |0.00                               |0.00       |0.00                               |0.00                   |0.00               |

我不知道如何使用 PHP 创建表。我想过执行一个 MySQL 请求来创建和添加数据，但不知道如何开始。

任何建议都会很有帮助。

【问题讨论】：

如果这是一个 MySQL 问题，你为什么还要用微软的“SQL Server”来标记它？标记一个或另一个。不要同时标记两者。
将这样的数据复制到第二个表中通常是个坏主意。它可能是一种更好的方法来创建一个以它想要的方式组合数据的视图。这样一来，只有数据的副本，您不必担心保持所有表同步。

标签： php mysql

【解决方案1】：

如果您已经知道列名（即不同的描述），那么您可以创建一个表并编写一个 SELECT 查询，如下所示：

SELECT MSISDN, Abar Date, Upgrd, Pack Code, Tariff, Avg Spend, SIM Number,
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = '100MB') AS 100MB,
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Basic Data 9600') AS 'Basic Data 9600',
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Basic Telephony') AS 'Basic Telephony',
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Ebilling - Corporate CD Extract') AS 'Ebilling - Corporate CD Extract',
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Unrestricted APN') AS 'Unrestricted APN'
FROM Table_1 t1;

您可以使用这些列创建一个表并使用 INSERT INTO .. SELECT 语法，例如

INSERT INTO table_3
SELECT MSISDN, Abar Date, Upgrd, Pack Code, Tariff, Avg Spend, SIM Number,
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = '100MB') AS 100MB,
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Basic Data 9600') AS 'Basic Data 9600',
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Basic Telephony') AS 'Basic Telephony',
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Ebilling - Corporate CD Extract') AS 'Ebilling - Corporate CD Extract',
(SELECT COALESCE(SUM(VALUE), 0) FROM Table_2 WHERE MSISDN = t1.MSISDN AND description = 'Unrestricted APN') AS 'Unrestricted APN'
FROM Table_1 t1;

【讨论】：

欣赏达山。请在下面查看我的后续 cmets。
@LouisMeyer 我在查询中添加了COALESCE，现在试试？

【解决方案2】：

谢谢达山

我设法使用您的建议和实时数据库表中的一些真实数据编译了以下内容。

创建工作正常的临时表：

CREATE table `infolog_SIMS` (`MSISDN` VARCHAR(50), `Abar Date` VARCHAR(50), `Term Date` VARCHAR(50), `Upgrd` VARCHAR(50), `Upgrd date` VARCHAR(50), `Pack Code` VARCHAR(50), `Tariff` VARCHAR(50), `Pack Desc` VARCHAR(50), `Avg Spend` VARCHAR(50), `Stat` VARCHAR(50), `SIM Number` VARCHAR(50));

然后在临时表中添加额外的列，也可以正常工作::

ALTER TABLE `infolog_SIMS` ADD COLUMN `100MB` VARCHAR(50) NOT NULL, ADD COLUMN `Basic Data 9600` VARCHAR(50) NOT NULL, ADD COLUMN `Basic Telephony` VARCHAR(50) NOT NULL, ADD COLUMN `Ebilling Corporate CD Extract` VARCHAR(50) NOT NULL, ADD COLUMN `LTE` VARCHAR(50) NOT NULL, ADD COLUMN `MMS Standard` VARCHAR(50) NOT NULL, ADD COLUMN `Unrestricted APN` VARCHAR(50) NOT NULL, ADD COLUMN `My Meg 0` VARCHAR(50) NOT NULL, ADD COLUMN `SMS Mobile Originating` VARCHAR(50) NOT NULL, ADD COLUMN `Caller Identity FREE` VARCHAR(50) NOT NULL, ADD COLUMN `Promotional My Gig 1 24 Months` VARCHAR(50) NOT NULL, ADD COLUMN `MyMeg 30 Mobile Internet Bundle` VARCHAR(50) NOT NULL, ADD COLUMN `15MB` VARCHAR(50) NOT NULL, ADD COLUMN `SPNwww.infolog.co.za` VARCHAR(50) NOT NULL, ADD COLUMN `Make Nat. Int. Roam Calls` VARCHAR(50) NOT NULL, ADD COLUMN `Outgoing Bar` VARCHAR(50) NOT NULL;

现在为每一行添加值：

SELECT *, (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = '100MB') AS '100MB', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Basic Data 9600') AS 'Basic Data 9600', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Basic Telephony') AS 'Basic Telephony', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Ebilling Corporate CD Extract') AS 'Ebilling Corporate CD Extract', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'LTE') AS 'LTE', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'MMS Standard') AS 'MMS Standard', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Unrestricted APN') AS 'Unrestricted APN', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'My Meg 0') AS 'My Meg 0', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'SMS Mobile Originating') AS 'SMS Mobile Originating', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Caller Identity FREE') AS 'Caller Identity FREE', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Promotional My Gig 1 24 Months') AS 'Promotional My Gig 1 24 Months', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'MyMeg 30 Mobile Internet Bundle') AS 'MyMeg 30 Mobile Internet Bundle', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = '15MB') AS '15MB', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'SPNwww.infolog.co.za') AS 'SPNwww.infolog.co.za', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Make Nat. Int. Roam Calls') AS 'Make Nat. Int. Roam Calls', (SELECT `Value` FROM `Infolog_temp_VAS` WHERE `Dialling No` = `t1`.`MSISDN` AND `Service Description` = 'Outgoing Bar') AS 'Outgoing Bar' FROM `Infolog_temp_SDR` `t1`;

如果Infolog_temp_VAS 表中不存在服务，则某些Value 字段会返回NULL。如果service 不存在，是否可以添加IF 条件以将NULL 更改为NO？

请注意，这不是实际的插入命令，而只是选择部分。

【讨论】：