Difference between revisions of "VbzCart/queries"
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(→Views: qryCat_Items; need qryCat_Titles next) |
(→Views: qryCat_Titles; next: qryCat_Depts) |
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* '''qryCbx_''': queries used for filling comboboxes. The unique ID will always be the first field, and the text to display will always be the second field; additional fields may be provided for use in further '''qryCbx_''' queries which show a subset of the results. | * '''qryCbx_''': queries used for filling comboboxes. The unique ID will always be the first field, and the text to display will always be the second field; additional fields may be provided for use in further '''qryCbx_''' queries which show a subset of the results. | ||
* '''qryCat_''': queries which build catalog numbers or information by joining multiple tables. (In Access, the convention was '''qryCatNum_'''.) | * '''qryCat_''': queries which build catalog numbers or information by joining multiple tables. (In Access, the convention was '''qryCatNum_'''.) | ||
| + | ===qryCat_Titles=== | ||
| + | <sql>SELECT | ||
| + | t.ID, | ||
| + | t.Name, | ||
| + | CONCAT_WS('-',d.CatNum,t.CatKey) AS CatNum, | ||
| + | d.ID_Supplier, | ||
| + | t.ID_Dept, | ||
| + | t.DateAdded, | ||
| + | t.RstkMin AS QtyMin_Rstk, | ||
| + | t.Descr, | ||
| + | t.Notes, | ||
| + | t.Supplier_CatNum AS Supp_CatNum | ||
| + | FROM titles AS t LEFT JOIN qryCat_Depts AS d ON t.ID_Dept=d.ID;</sql> | ||
===qryCat_Items=== | ===qryCat_Items=== | ||
<sql>SELECT | <sql>SELECT | ||
| Line 28: | Line 41: | ||
i.isPulled, | i.isPulled, | ||
i.QtyMin_Stk, | i.QtyMin_Stk, | ||
| − | t. | + | t.QtyMin_Rstk AS QtyMin_Rstk_Title |
FROM cat_items AS i LEFT JOIN qryCat_Titles AS t on i.ID_Title=t.ID | FROM cat_items AS i LEFT JOIN qryCat_Titles AS t on i.ID_Title=t.ID | ||
ORDER BY t.ID IS NOT NULL, i.CatNum, i.ItOpt_Sort;</sql> | ORDER BY t.ID IS NOT NULL, i.CatNum, i.ItOpt_Sort;</sql> | ||
Revision as of 11:42, 3 October 2007
Overview
"Views" in MySQL are like SELECT "queries" in MS Access, i.e. they pull data from existing tables and are themselves usable as data sources in much the same way that tables are (and in which result sets from functions are not).
Views
Some common prefixes:
- qryCbx_: queries used for filling comboboxes. The unique ID will always be the first field, and the text to display will always be the second field; additional fields may be provided for use in further qryCbx_ queries which show a subset of the results.
- qryCat_: queries which build catalog numbers or information by joining multiple tables. (In Access, the convention was qryCatNum_.)
qryCat_Titles
<sql>SELECT
t.ID,
t.Name,
CONCAT_WS('-',d.CatNum,t.CatKey) AS CatNum,
d.ID_Supplier,
t.ID_Dept,
t.DateAdded,
t.RstkMin AS QtyMin_Rstk,
t.Descr,
t.Notes,
t.Supplier_CatNum AS Supp_CatNum
FROM titles AS t LEFT JOIN qryCat_Depts AS d ON t.ID_Dept=d.ID;</sql>
qryCat_Items
<sql>SELECT
i.ID,
i.ID_Title,
(t.ID IS NOT NULL) AS TitleExists,
t.ID_Supplier,
i.PriceSell,
i.PriceList,
i.PriceBuy,
i.CatNum,
t.CatNum AS Title_CatNum,
t.Name AS Title_Name,
i.ID_ItTyp,
i.ID_ItOpt,
i.ItOpt_Descr,
i.ItOpt_Sort,
CONCAT(t.Name, IF(i.ItOpt_Descr IS NULL,,CONCAT(' (',i.ItOpt_Descr,')')) AS Descr,
i.Supp_CatNum,
i.isForSale,
i.isPulled,
i.QtyMin_Stk,
t.QtyMin_Rstk AS QtyMin_Rstk_Title
FROM cat_items AS i LEFT JOIN qryCat_Titles AS t on i.ID_Title=t.ID ORDER BY t.ID IS NOT NULL, i.CatNum, i.ItOpt_Sort;</sql>
qryCbx_Items
<sql>SELECT
i.ID,
CONCAT(
IF(i.isPulled,CONCAT('!PULLED (',i.ID,')'),),
i.CatNum,
IF(i.Supp_CatNum IS NULL,,CONCAT('[',i.SuppCatNum,']')),
IF(i.isForSale,,' n/a'),
i.Descr)
AS Descr,
i.isForSale
FROM qryCat_Items AS i ORDER BY NOT i.isPulled, i.isForSale, i.CatNum;</sql>