user3237076 user3237076 - 5 months ago 20
SQL Question

Or operator returns more rows then expected mysql

I have a table with some items that are related to car models. Those items could have several categories. I have to select all of them that are related to cars and in all given categories categories for each item stored in sc_products table.

Here is my query:

SELECT
t15_catalogue_line.
T15_GROUP,
sc_products.product_code,
sc_products.unic, sc_products.name_ru, UPPER(TRIM(sc_products.brief_description_ru)) AS brief_description_ru, sc_products.suupplier, price.Price, sc_group_discounts.`action`, sc_group_discounts.procent, sc_products.productID, price.in_stock, price.supplier, t10_item.T10_ITEM, t10_item.unic, t10_item.T10_DESC, t10_item.T10_IMG, t10_item.T10_ITEM_GROUP, t10_item.T10_FIELD1, t10_item.T10_FIELD2, t10_item.T10_FIELD3, t10_item.T10_FIELD4, t10_item.T10_FIELD5, t10_item.T10_FIELD6, t10_item.T10_FIELD7, t10_item.T10_FIELD8, t10_item.T10_FIELD9, t10_item.T10_FIELD10, t10_item.T10_FIELD11, t14_item_fields.T14_ITEM_GROUP, t14_item_fields.T14_FIELD, t14_item_fields.T14_NAME, t14_item_fields.T14_UNIT, t14_item_fields.T14_SEARCH
FROM
sc_products
LEFT OUTER JOIN t15_catalogue_line ON (sc_products.unic = t15_catalogue_line.unic)
LEFT OUTER JOIN price ON (sc_products.unic = price.unic) AND (sc_products.suupplier = price.postavchik)
LEFT OUTER JOIN sc_group_discounts ON (sc_products.item_group = sc_group_discounts.item_group)
LEFT OUTER JOIN t10_item ON (sc_products.unic = t10_item.unic and sc_products.CatText=t10_item.CatText and sc_products.brief_description_ru=t10_item.brand)
LEFT OUTER JOIN t14_item_fields ON (t10_item.T10_ITEM_GROUP = t14_item_fields.T14_ITEM_GROUP)
WHERE
sc_products.CatText = 'bracke mechanism' or
sc_products.CatText='bracke montage ' or
sc_products.CatText='hydraulic repair ' AND
t15_catalogue_line.T15_CARTYPE = '30442' AND
t15_catalogue_line.T15_GROUP = '666' and
sc_products.unic is not null and
sc_products. unic!=''
GROUP BY sc_products.product_code,sc_products.brief_description_ru, sc_products.suupplier
ORDER BY ISNULL( price.price),price.price ASC


Query returns all items in those caegories and they aren't related to auto so table
t15_catalog
line doesn't take part in query what could be the solution

Answer

I highly suspect that the missing parentheses () around the multiple AND is your problem.

Query returns all items in those caegories and they aren't related to auto so table t15_catalog line doesn't take part in query what could be the solution

Your grouping logic now does exactly what you describe, below is what i think you meant to do:

WHERE (sc_products.CatText = 'bracke mechanism' or sc_products.CatText='bracke montage ' or sc_products.CatText='hydraulic repair ') AND t15_catalogue_line.T15_CARTYPE = '30442' AND t15_catalogue_line.T15_GROUP = '666' and sc_products.unic is not null and sc_products. unic!='' GROUP BY sc_products.product_code,sc_products.brief_description_ru, sc_products.suupplier ORDER BY ISNULL( price.price),price.price ASC
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