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トップSQL Anywhereに関する質問SQLでGroupByして3テーブル結合したい

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2

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2022/04/06 00:34

投稿

ryoucyan2000
ryoucyan2000

スコア18

test CHANGED
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test CHANGED
@@ -116,8 +116,3 @@
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  |:--|:--:|:--:|:--:|--:|
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  |3|123|machine1|1|B001
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  |5|223|machine2|2|A003
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-
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-
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- |列1|列2|列3|1|
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- |:--|:--:|:--:|--:|
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-
SQL AnywhereMySQL

1

質問の仕方でアドバイスいただきましたので内容を修正しました。データをcreate tableで追加　SQLの修正　得たい結果の追加

2022/04/05 16:22

投稿

ryoucyan2000
ryoucyan2000

スコア18

test CHANGED
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test CHANGED
@@ -1,3 +1,4 @@
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+ 質問の仕方でアドバイスいただきましたので内容を修正しました。
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  3個のテーブルを結合したいのですがうまくいきません
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  Mysql8.0です。
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@@ -12,55 +13,111 @@
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  Error: ER_NO_SUCH_TABLE: Table 'pa.latest2' doesn't exist
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  となってしまします。なぜそうなってしまうのかわからず教えて下さい
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+ 質問途中で②に対して①と③をjoinすればよかったと思いましたが
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+ テーブルをまたいだ結合方法として知りたいのでご教授いただきたく
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+
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+
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+
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+
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  ### 2テーブル成功
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  ```SQL
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  SELECT
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- pa.qsi.id AS id,
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+ psi.id AS id,
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- pa.qsi.ieee_address AS ieee_address,
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+ psi.ieee_address AS ieee_address,
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- pa.machine_m.name AS name,
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+ machine_m.machine_name AS name,
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-
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- pa.qsi.red_information AS red,
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+ psi.red_information AS red
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- pa.qsi.wdt_monitoring_information AS wdt_monitoring_information,
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- pa.qsi.time_counter AS time_counter
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  FROM
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- ((pa.qsi
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+ (psi
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  JOIN (SELECT
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- pa.qsi.ieee_address AS ieee_address,
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+ psi.ieee_address AS ieee_address,
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- MAX(pa.qsi.id) AS ID
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+ MAX(psi.id) AS ID
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  FROM
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- pa.qsi
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+ psi
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- GROUP BY pa.qsi.ieee_address) latest ON (((pa.qsi.ieee_address = latest.ieee_address)
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+ GROUP BY psi.ieee_address) latest ON ((psi.ieee_address = latest.ieee_address)
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- AND (pa.qsi.id = latest.ID))))
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+ AND (psi.id = latest.ID))
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- JOIN pa.machine_m ON ((latest.ieee_address = pa.machine_m.ieee)));
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+ JOIN machine_m ON (latest.ieee_address = machine_m.ieee));
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  ```
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  ### 3テーブルを結合失敗
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  ```SQL
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  SELECT
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- pa.wsi.id AS id,
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+ psi.id AS id,
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- pa.wsi.ieee_address AS ieee_address,
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+ psi.ieee_address AS ieee_address,
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- pa.machine_m.name AS name,
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+ machine_m.machine_name AS name,
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- pa.wsi.red_information AS red,
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+ psi.red_information AS red,
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- pa.wsi.wdt_monitoring_information AS wdt_monitoring_information,
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- pa.wsi.time_counter AS time_counter,
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- pa.send_program.toolno as toolno
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+ send_program.toolno as toolno
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  FROM
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- ((pa.wsi
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+ ((psi
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  JOIN (SELECT
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- pa.wsi.ieee_address AS ieee_address,
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+ psi.ieee_address AS ieee_address,
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- MAX(pa.wsi.id) AS ID
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+ MAX(psi.id) AS ID
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  FROM
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- pa.wsi
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+ psi
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- GROUP BY pa.wsi.ieee_address) latest ON ((pa.wsi.ieee_address = latest.ieee_address)
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+ GROUP BY psi.ieee_address) latest ON ((psi.ieee_address = latest.ieee_address)
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- AND (pa.wsi.id = latest.ID))
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+ AND (psi.id = latest.ID))
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  JOIN (select
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- pa.send_program.machine AS machine,
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+ send_program.machine AS machine,
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- MAX(pa.send_program.ID) AS ID2
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+ MAX(send_program.ID) AS ID2
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  FROM
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- pa.send_program
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+ send_program
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- GROUP BY pa.send_program.machine) latest2 ON ((pa.send_program.machine = latest2.machine)
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+ GROUP BY send_program.machine) latest2 ON ((send_program.machine = latest2.machine)
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- AND (pa.send_program.id = latest2.ID2)))
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+ AND (send_program.id = latest2.ID2)))
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- join latest2 ON latest.ieee_address = latest2.machine)
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+ join latest2 ON machine_m.machine_name = latest2.machine)
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- join pa.machine_m ON ((latest.ieee_address = pa.machine_m.ieee));
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+ join machine_m ON (latest.ieee_address = machine_m.ieee);
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  ```
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+ データ例
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+ ```SQL
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+ create table psi(
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+ id INT NOT NULL PRIMARY KEY,
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+ ieee_address varchar(50) null,
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+ red_information smallint(5) null
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+ );
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+
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+ INSERT INTO psi
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+ (id,ieee_address,red_information)
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+ VALUES
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+ (1,123,1),
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+ (2,123,0),
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+ (3,123,1),
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+ (4,223,0),
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+ (5,223,2);
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+
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+ create table machine_m(
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+ id INT NOT NULL PRIMARY KEY,
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+ ieee varchar(50) null,
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+ machine_name tinytext null
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+ );
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+
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+ INSERT INTO machine_m
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+ (id,ieee,machine_name)
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+ VALUES
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+ (1,123,"machine1"),
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+ (2,223,"machine2");
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+
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+ create table send_program(
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+ id INT NOT NULL PRIMARY KEY,
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+ toolno tinytext null,
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+ machine tinytext null
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+ );
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+
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+ INSERT INTO send_program
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+ (id,toolno,machine)
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+ VALUES
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+ (1,"A001","machine1"),
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+ (2,"A002","machine2"),
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+ (3,"B001","machine1"),
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+ (4,"A003","machine2")
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+ ;
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+ ```
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+ ### 得たい結果
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+
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+ |ID|ieee_address|name|red|toolno|
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+ |:--|:--:|:--:|:--:|--:|
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+ |3|123|machine1|1|B001
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+ |5|223|machine2|2|A003
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+
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+
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+ |列1|列2|列3|1|
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+ |:--|:--:|:--:|--:|
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+
SQL AnywhereMySQL