Difference between revisions of "VbzCart/pieces/catalog/building"

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(→‎(Step 7) qryVb_Items_update_forsale: I can't see how this step is actually necessary.)
m (updated template name)
 
(56 intermediate revisions by the same user not shown)
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==Navigation==
 
−
[[VbzCart]]: [[VbzCart catalog building|catalog building]]
 
 
==Version==
 
==Version==
−
This is being revised yet again for the 2007 VbzCart-MySQL migration project; the previous version is here: [[vbzwiki:VbzCart catalog building 2006|VbzCart catalog building 2006]].
+
This is a tricky process which has been revised multiple times.
−
==Process==
 
−
This is only a draft, as the process is still being worked out.
 
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# Update the list of all catalog-based items ([calc Items Updates saved])
 
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#* Generate a list of all the items currently available from suppliers (query)
 
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#* Add any new items to [calc Items Updates saved]
 
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# For all items in [calc Items Updates saved] where ID_Item IS NULL, create new records in cat_items and update the corresponding records in [calc Items Updates saved]
 
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# Update all data in cat_items from data stored in [calc Items Updates saved]
 
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# In cat_items, clear all isForSale flags ''except'' for items either in stock or found in [calc Items Updates saved]
 
−
==SQL==
 
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These are from the MS Access 97 version.
 
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===qryCatNum_Depts===
 
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<sql>SELECT
 
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  d.ID,
 
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  d.name,
 
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  d.sort,
 
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  d.CatKey,
 
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  ID_Supplier,
 
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  s.CatKey&iif(d.CatKey IS NULL,"","-"&d.CatKey) AS CatNum,
 
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  d.CatKey AS DeptCatKey
 
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FROM Depts AS d LEFT JOIN Suppliers AS s ON d.ID_Supplier=s.ID;</sql>
 
  
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===qryCatNum_Titles===
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* {{l/sub|2017}} version - 2016 code apparently never really got finished, and the Items table needs some flag changes
−
v_titles has much the same information, but depends on _titles and so may not be up-to-date.
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* {{l/sub|2016}} version - webified version of 2010, with rules finally documented
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<sql>SELECT
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* '''2010''' version: see {{l/vbzcart/code|maint/build-cat.php}}
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  t.ID,
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* {{l/sub|2009}} version - SQL statements executed directly from PHP code
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  t.Name,
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* {{l/sub|2008}} version - started in 2007 - a set of stored queries called from a stored procedure
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  d.CatNum&"-"&t.CatKey AS CatNum,
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* {{l/sub|2006}} version
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  d.DeptCatKey,
 
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  t.CatKey AS TitleCatKey,
 
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  ID_Dept,
 
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  d.ID_Supplier
 
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FROM
 
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  Titles AS t
 
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  LEFT JOIN qryCatNum_Depts AS d
 
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    ON t.ID_dept=d.ID</sql>
 
  
−
===(Step 1aa) qryVb_Items_updates===
+
It's interesting to note that I originally thought of SCM Groups as groups ''of Titles'' -- an explanation from the [[VbzCart/tables]] page on 2008-02-17 (and only removed on 2016-02-01) says:
−
<sql>SELECT
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<blockquote>The key concept here is "catalog title groups" (CTGs). A CTG is a set of titles which are all available with the same set of options (e.g. sizes) at the same prices (e.g. $10 S, $11 M-XL, $12 2XL). The final vbz catalog (cat_items) is the result of a sort of vector multiplication of Titles (cat_titles) and CTGs plus any items in stock.
−
  BuildOption(g.Code,gt.GroupCode,o.CatKey) AS CatSfx,
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</blockquote>
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  t.ID&CatSfx AS IDS_Update,
+
This conceptualization no longer works, as a SCM Title may have one or more SCM Groups -- e.g. if it has a set of standard sizes (like S-3X) but is also available in super-large sizes (4X+).
−
  t.CatNum&CatSfx AS CatNum,
 
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  t.ID AS ID_Title,
 
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  g.ID AS ID_TGroup,
 
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  gt.ID AS ID_TGTitle,
 
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  gi.ID AS ID_TGItem,
 
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  gi.ID_ItemType AS ID_ItTyp,
 
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  gi.ID_Option AS ID_ItOpt
 
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FROM
 
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( ( ( ( qryCatNum_Titles AS t
 
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        LEFT JOIN [TGroup Titles] AS gt
 
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          ON gt.ID_Title=t.ID
 
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      )
 
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      LEFT JOIN TGroups AS g
 
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        ON g.ID=gt.ID_TGroup
 
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    )
 
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    LEFT JOIN qryCatalogs_Active AS c
 
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      ON gt.ID_Catalog=c.ID
 
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  )
 
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  LEFT JOIN [TGroup Items] AS gi
 
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    ON gi.ID_TGroup=g.ID
 
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)
 
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LEFT JOIN Options AS o
 
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  ON gi.ID_Option=o.ID
 
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WHERE
 
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  (c.ID IS NOT NULL)
 
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  AND g.Active
 
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  AND gt.Active
 
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  AND ((gt.WhenDiscont IS NULL) OR (gt.WhenDiscont>Now))
 
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  AND gi.Active;</sql>
 
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===(Step 1a) qryVb_Items_updates_new===
 
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<sql>SELECT c.*
 
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  FROM qryVb_Items_Updates AS c
 
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  LEFT JOIN [calc Item Updates saved] AS s
 
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    ON c.IDS_Update=s.IDS_Update
 
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    WHERE s.IDS_Update IS NULL;</sql>
 
−
 
 
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===(Step 1) qryVb_Items_updates_append===
 
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<sql>INSERT INTO [calc Item Updates saved] (
 
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  ID_Item,
 
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  IDS_Update,
 
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  ID_Title,
 
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  ID_TGroup,
 
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  ID_TGTitle,
 
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  ID_TGItem,
 
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  ID_ItTyp,
 
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  ID_ItOpt )
 
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SELECT
 
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  NULL,
 
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  IDS_Update,
 
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  ID_Title,
 
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  ID_TGroup,
 
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  ID_TGTitle,
 
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  ID_TGItem,
 
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  ID_ItTyp,
 
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  ID_ItOpt
 
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FROM qryVb_Items_Updates_new;</sql>
 
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===(Step 1b) qryVb_Items_updates_copy_fields===
 
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<sql>UPDATE
 
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  [calc Item Updates saved] AS s
 
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  LEFT JOIN qryVb_Items_updates AS u
 
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    ON s.IDS_Update=u.IDS_Update
 
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  SET
 
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    s.ID_ItTyp = u.ID_ItTyp,
 
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    s.ID_ItOpt = u.ID_ItOpt;</sql>
 
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===(Step 2a) qryVb_Items_results===
 
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<sql>SELECT
 
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  s.ID_Item,
 
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  s.CatNum,
 
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  (
 
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    tg.Active AND
 
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    (
 
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      (tgt.WhenDiscont Is Null)
 
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    OR
 
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      (tgt.WhenDiscont>Now())
 
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    )
 
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  AND tgt.Active AND tgi.Active AND (c.ID_Supercede Is Null)
 
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  ) AS isForSale,
 
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  isForSale AND NOT c.isCloseOut AS isInPrint,
 
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  c.isCloseOut,
 
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  s.ID_Title,
 
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  tgi.ID_ItemType AS ID_ItTyp,
 
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  tgi.ID_Option AS ID_ItOpt,
 
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  tgi.ID_ShipCode AS ID_ShipCost,
 
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  tgi.PriceBuy*100 AS PriceBuy,
 
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  tgi.PriceSell*100 AS PriceSell,
 
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  tgi.PriceList*100 AS PriceList,
 
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  IIF(tgi.Descr Is Null,OptionJoin(tgt.GroupDescr,o.Descr," / "),tgi.Descr) AS ItOpt_Descr,
 
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  s.CatSfx,
 
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  tg.TitleSort & it.Sort & o.Sort AS ItOpt_Sort
 
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FROM
 
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( ( ( ( ( [calc Item Updates saved] AS s
 
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          LEFT JOIN TGroups AS tg
 
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            ON s.ID_TGroup = tg.ID
 
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        ) LEFT JOIN [TGroup Titles] AS tgt
 
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            ON s.ID_TGTitle = tgt.ID
 
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      ) LEFT JOIN [TGroup Items] AS tgi
 
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          ON s.ID_TGItem = tgi.ID
 
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    ) LEFT JOIN [Supplier Catalogs] AS c
 
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        ON tgt.ID_Catalog = c.ID
 
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  ) LEFT JOIN Options AS o
 
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      ON tgi.ID_Option = o.ID
 
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) LEFT JOIN [Item Types] AS it
 
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    ON tgi.ID_ItemType = it.ID;</sql>
 
−
 
 
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===(Step 2) qryVb_Items_results_append===
 
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This adds new cat_items rows for any calculated items not already cross-referenced. It doesn't cross-reference them, however. That is done by the next query.
 
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<sql>INSERT INTO cat_items (
 
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  CatNum,
 
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  isForSale,
 
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  isMaster,
 
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  isInPrint,
 
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  isCloseOut,
 
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  ID_ItTyp,
 
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  ID_ItOpt,
 
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  ItOpt_Descr,
 
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  ItOpt_Sort,
 
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  ID_ShipCost,
 
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  PriceBuy,
 
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  PriceSell,
 
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  PriceList )
 
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SELECT
 
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  r.CatNum,
 
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  r.isForSale,
 
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  FALSE AS isMaster,
 
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  r.isInPrint,
 
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  r.isCloseOut,
 
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  r.ID_ItTyp,
 
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  r.ID_ItOpt,
 
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  r.ItOpt_Descr,
 
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  r.ItOpt_Sort,
 
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  r.ID_ShipCost,
 
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  r.PriceBuy,
 
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  r.PriceSell,
 
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  r.PriceList
 
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FROM
 
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  qryVb_Items_Results AS r
 
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  LEFT JOIN cat_items AS i
 
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    ON r.ID_Item=i.ID
 
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  WHERE i.ID IS NULL;</sql>
 
−
 
 
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===(Step 3) qryVb_Items_updates_index_new===
 
−
This plugs the Item ID back into the calculated temp table. It assumes (1) 1:1 correspondence between Item IDs and catalog numbers, and (2) catalog numbers won't be changed during the course of a build (though they can change in general).
 
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<sql>UPDATE
 
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  [calc Item Updates saved] AS s
 
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  LEFT JOIN cat_items AS i
 
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    ON i.CatNum=s.CatNum
 
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  SET s.ID_Item = i.ID
 
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  WHERE s.ID_Item IS NULL;</sql>
 
−
 
 
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===(Step 4) qryVb_Items_results_update===
 
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<sql>UPDATE
 
−
  qryVb_Items_Results AS r
 
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  LEFT JOIN cat_items AS i
 
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    ON r.ID_Item=i.ID
 
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  SET
 
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    i.CatNum = r.CatNum,
 
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    i.isForSale = r.isForSale,
 
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    i.isInPrint = r.isInPrint,
 
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    i.isCloseOut = r.isCloseOut,
 
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    i.ID_ItTyp = r.ID_ItTyp,
 
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    i.ID_ItOpt = r.ID_ItOpt,
 
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    i.ItOpt_Descr = iif(r.ItOpt_Descr IS NULL,i.ItOpt_Descr,r.ItOpt_Descr),
 
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    i.ItOpt_Sort = r.ItOpt_Sort,
 
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    i.ID_ShipCost = r.ID_ShipCost,
 
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    i.PriceBuy = r.PriceBuy,
 
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    i.PriceSell = r.PriceSell,
 
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    i.PriceList = r.PriceList
 
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  WHERE r.ID_Item IS NOT NULL;</sql>
 
−
===(Step 5) qryVb_Items_clear_unlisted===
 
−
Clears the isInPrint flag for cat_items not found in the calculated in-print listing
 
−
<sql>UPDATE
 
−
  cat_items AS i
 
−
  LEFT JOIN qryVb_Items_Results AS r
 
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    ON r.ID_Item=i.ID
 
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  SET
 
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    i.isInPrint = FALSE
 
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  WHERE r.ID_Item IS NULL;</sql>
 
−
 
 
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===(Step 6) qryVb_Items_update_stock===
 
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Updates the stock status for all cat_items
 
−
<sql>UPDATE
 
−
  cat_items AS i
 
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  LEFT JOIN v_stk_items_remaining AS s
 
−
  SET
 
−
    i.isForSale = TRUE,
 
−
    qtyInStock = s.QtyForSale
 
−
  WHERE (s.QtyForSale>0);</sql>
 

Latest revision as of 11:07, 12 June 2017

Version

This is a tricky process which has been revised multiple times.

  • 2017 version - 2016 code apparently never really got finished, and the Items table needs some flag changes
  • 2016 version - webified version of 2010, with rules finally documented
  • 2010 version: see maint/build-cat.php
  • 2009 version - SQL statements executed directly from PHP code
  • 2008 version - started in 2007 - a set of stored queries called from a stored procedure
  • 2006 version

It's interesting to note that I originally thought of SCM Groups as groups of Titles -- an explanation from the VbzCart/tables page on 2008-02-17 (and only removed on 2016-02-01) says:

The key concept here is "catalog title groups" (CTGs). A CTG is a set of titles which are all available with the same set of options (e.g. sizes) at the same prices (e.g. $10 S, $11 M-XL, $12 2XL). The final vbz catalog (cat_items) is the result of a sort of vector multiplication of Titles (cat_titles) and CTGs plus any items in stock.

This conceptualization no longer works, as a SCM Title may have one or more SCM Groups -- e.g. if it has a set of standard sizes (like S-3X) but is also available in super-large sizes (4X+).

Retrieved from "https://htyp.org/mw/index.php?title=VbzCart/pieces/catalog/building&oldid=22764"