[英]Advanced MySQL search query - using RLIKE
Im working on a MySQL search query for a product search module in Joomla/Virtuemart. 我正在Joomla / Virtuemart中针对产品搜索模块的MySQL搜索查询进行工作。 I am actually trying to modify an existing MySQL query from using MATCH / AGAINST to using RLIKE, but my modified query gives errors..
我实际上正在尝试将现有的MySQL查询从使用MATCH / AGAINST修改为使用RLIKE,但是我修改后的查询给出了错误。
Here is the original query with MATCH / AGAINST which has no errors: 这是使用MATCH / AGAINST的原始查询,没有错误:
$searchstring = " +search* +string* +test*";
$query ="SELECT p.virtuemart_product_id, l.product_name from #__virtuemart_products AS p, #__virtuemart_products_".VMLANG." AS l WHERE MATCH(product_name,customtitle) AGAINST ('".$searchstring."' IN BOOLEAN MODE) AND p.published = '1' AND p.virtuemart_product_id = l.virtuemart_product_id LIMIT 0,".$prods." union (select p.virtuemart_product_id, l.product_name from #__virtuemart_products AS p, #__virtuemart_products_".VMLANG." as l where MATCH(product_sku) AGAINST ('".$searchstring."' IN BOOLEAN MODE) and p.published = '1' and p.virtuemart_product_id = l.virtuemart_product_id LIMIT 0,".$prods.")";
Here is my altered query using RLIKE: 这是我使用RLIKE更改的查询:
$searchstring = "search|string|test";
$query ="SELECT p.virtuemart_product_id, l.product_name from #__virtuemart_products AS p, #__virtuemart_products_".VMLANG." AS l WHERE product_name,customtitle RLIKE '".$searchstring."' AND p.published = '1' AND p.virtuemart_product_id = l.virtuemart_product_id LIMIT 0,".$prods." union (select p.virtuemart_product_id, l.product_name from #__virtuemart_products AS p, #__virtuemart_products_".VMLANG." as l where product_sku RLIKE '".$searchstring."' and p.published = '1' and p.virtuemart_product_id = l.virtuemart_product_id LIMIT 0,".$prods.")";
I am out of ideas as to why the RLIKE search query does not work. 我对RLIKE搜索查询为什么不起作用一无所知。 I hope someone can point out what I´m doing wrong here..
我希望有人可以指出我在这里做错了什么。
You have this weird expression in your query: 您的查询中有以下奇怪的表达式:
WHERE product_name, customtitle RLIKE '".$searchstring."'
Try combining them using concat()
first: 尝试首先使用
concat()
组合它们:
(SELECT p.virtuemart_product_id, l.product_name
from #__virtuemart_products p join
#__virtuemart_products_".VMLANG." l
on p.virtuemart_product_id = l.virtuemart_product_id
WHERE concat(product_name, customtitle) RLIKE '".$searchstring."' AND
p.published = '1'
LIMIT 0,".$prods."
)
union
(select p.virtuemart_product_id, l.product_name
from #__virtuemart_products p join
#__virtuemart_products_".VMLANG." l
on p.virtuemart_product_id = l.virtuemart_product_id
where product_sku RLIKE '".$searchstring."' and
p.published = '1'
LIMIT 0,".$prods.
)
You could also compare each one separately: 您还可以分别比较每个:
WHERE (product_name RLIKE '".$searchstring."' OR
customtitle RLIKE '".$searchstring."'
) AND . . .
Note that I also fixed the join
syntax to use explicit joins. 请注意,我还修复了
join
语法以使用显式连接。
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