Mysql
 sql >> Datenbank >  >> RDS >> Mysql

Parsen von MySQL-Felddaten

Ich denke, Sie brauchen eine ausgefeiltere Methode, um zu überprüfen, ob die Models Spaltenwerte sind aufgrund von Leerzeichen nach Semikolons korrekt. Zusätzlich, wenn Sie die Models verarbeiten müssen Spaltenwerte, die mehr als zehn Teile enthalten, benötigen Sie eine längere Zahlenfolge. Ich verwende die INFORMATION_SCHEMA COLUMNS Tabelle dazu. Dazu können Sie auch eine Hilfstabelle erstellen.

SELECT
  CONCAT(
    IF(N.n = 0, '', LEFT(t.part, 2)),
    SUBSTRING_INDEX(
      SUBSTRING_INDEX(t.part, '-', N.n + 1), '-', -1
    )
  ) AS part, t.isHD, t.ID, t.GroupNumber, t.PartNo, t.Models
FROM Numbers AS N CROSS JOIN (
  SELECT
    SUBSTRING_INDEX(
      SUBSTRING_INDEX(t.part, ' ', N.n + 1), ' ', -1
    ) AS part, t.isHD, t.ID, t.GroupNumber, t.PartNo, t.Models
  FROM Numbers AS N CROSS JOIN (
    SELECT
      SUBSTRING_INDEX(
        SUBSTRING_INDEX(t.part, ';', N.n + 1), ';', -1
      ) AS part, t.isHD, t.ID, t.GroupNumber, t.PartNo, t.Models
    FROM Numbers AS N CROSS JOIN (
      SELECT
        REPLACE(
          SUBSTRING_INDEX(
            SUBSTRING_INDEX(t.part, 'LHD', N.n + 1), 'LHD', -1
          ), ',', ''
        ) AS part, IF(N.n > 0, 1, t.isHD) AS isHD,
        t.ID, t.GroupNumber, t.PartNo, t.Models
      FROM Numbers AS N CROSS JOIN (
        SELECT
          SUBSTRING_INDEX(
            SUBSTRING_INDEX(p.Models, 'RHD', N.n + 1), 'RHD', -1
          ) AS part, IF(N.n > 0, 2, 0) AS isHD,
          p.ID, p.GroupNumber, p.PartNo, p.Models
        FROM Numbers AS N CROSS JOIN parts_listing AS p
        WHERE p.Models REGEXP '[[:<:]]([LR]HD,? +)?[0-9]+(-[0-9]+)*[[:>:]]' AND
              N.n <= (LENGTH(p.Models) - LENGTH(REPLACE(p.Models, 'RHD', ''))) / 3
      ) AS t WHERE N.n <= (LENGTH(t.part) - LENGTH(REPLACE(t.part, 'LHD', ''))) / 3
    ) AS t WHERE N.n <= LENGTH(t.part) - LENGTH(REPLACE(t.part, ';', ''))
  ) AS t WHERE N.n <= LENGTH(t.part) - LENGTH(REPLACE(t.part, ' ', ''))
) AS t WHERE t.part REGEXP '^[0-9]+(-[0-9]+)*$' AND
             N.n <= LENGTH(t.part) - LENGTH(REPLACE(t.part, '-', ''));

Teilausgabe (29 Zeilen):

+------+------+----+-------------+---------+--------------------------------------+
| part | isHD | ID | GroupNumber | PartNo  |                Models                |
+------+------+----+-------------+---------+--------------------------------------+
| 2201 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2202 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2211 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2220 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2222 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2232 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2240 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2301 |    0 |  1 | 0.000       | 391906  | 2201-02-11-20-22-32-40; 2301         |
| 2213 |    1 |  3 | 0.000       | 399391  | LHD 2213                             |
| 2313 |    2 |  5 | 0.000       | 415245  | RHD, 2313                            |
| 2631 |    0 |  7 | 0.000       | 436803  | 2631 (BODY 2678); 5431 (BODY 5478)   |
| 5431 |    0 |  7 | 0.000       | 436803  | 2631 (BODY 2678); 5431 (BODY 5478)   |
| 2206 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2213 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2226 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2233 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2302 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2306 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2313 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2332 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2333 |    1 | 14 | 0.0015      | G179559 | LHD, 2206-13-26-33; 2302-06-13-32-33 |
| 2201 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2202 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2211 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2220 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2222 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2232 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2240 |    0 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
| 2301 |    2 | 15 | 0.0015      | 422024  | 2201-02-11-20-22-32-40; RHD, 2301    |
+------+------+----+-------------+---------+--------------------------------------+

Demo auf DB Fiddle .