VbzCart/docs/pieces/catalog/building

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VbzCart: catalog building

Version

This is being revised yet again for the 2007 VbzCart-MySQL migration project; the previous version is here: VbzCart catalog building 2006.

Process

This is only a draft, as the process is still being worked out.

1. Update the list of all catalog-based items ([calc Items Updates saved])
   • Generate a list of all the items currently available from suppliers (query)
   • Add any new items to [calc Items Updates saved]
2. 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]
3. Update all data in cat_items from data stored in [calc Items Updates saved]
4. In cat_items, clear all isForSale flags except for items either in stock or found in [calc Items Updates saved]

SQL

qryVb_Items_updates_new

<sql>SELECT c.*

 FROM qryVb_Items_Updates AS c
 LEFT JOIN [calc Item Updates saved] AS s
   ON c.IDS_Update=s.IDS_Update
   WHERE s.IDS_Update IS NULL;</sql>

qryVb_Items_updates_append

<sql>INSERT INTO [calc Item Updates saved] (

 ID_Item,
 IDS_Update,
 ID_Title,
 ID_TGroup,
 ID_TGTitle,
 ID_TGItem,
 ID_ItTyp,
 ID_ItOpt )

SELECT

 NULL,
 IDS_Update,
 ID_Title,
 ID_TGroup,
 ID_TGTitle,
 ID_TGItem,
 ID_ItTyp,
 ID_ItOpt

FROM qryVb_Items_Updates_new;</sql>