比较从SQL(LONGTEXT)日期在项目中,我从MySQL WordPress的自定义字段数据:一个整数从PHP
---------------------------------------------------
id | post_id | meta_key | meta_value
---------------------------------------------------
1 | 200 | age_min | 5
2 | 200 | age_max | 8
3 | 399 | ... | ...
我的表结构
id => aut_increment
meta_key => varchar(255)
meta_value => longtext
从我的sql脚本我有以“age_min和age_max”和孩子的数量之间找到孩子的:
SELECT DISTINCT p.ID
, a.meta_value as nbrmin, b.meta_value as nbr_enfants_min , c.meta_value as age_min, d.meta_value as age_max
FROM `6288gjvs_posts` as p
LEFT JOIN 6288gjvs_postmeta as a ON a.post_id = p.ID
LEFT JOIN 6288gjvs_postmeta as b ON b.post_id = p.ID
LEFT JOIN 6288gjvs_postmeta as c ON c.post_id = p.ID
LEFT JOIN 6288gjvs_postmeta as d ON d.post_id = p.ID
WHERE p.post_type = 'product' AND post_status = 'publish'
AND a.meta_key = 'childs_min_number'
AND a.meta_value <= 2
AND b.meta_key = 'childs_max_number'
AND b.meta_value >= 2
AND c.meta_key = 'age_min'
AND c.meta_value = 1
AND d.meta_key = 'age_max'
AND d.meta_value >= 10
当我启动该查询,这不工作的亲perly,因为meta_value类型是一个longtext,我的php变量($ this-> age_min,$ this-> age_max)是整数,所以我无法比较这两种不同的类型?
我试图这样转换,没有运气:Mysql conversion functions
任何人都可以帮我请:
... CONVERT(a.meta_value, DECIMAL) ...
从这个网站提到
?
谢谢。
该死,17秒LATE – 2016-04-26 13:10:24
找你的吧,我对我的问题所作的编辑,我有在儿童年龄和数字之间进行搜索。 – user44321
你能标记我们的答案是正确的吗? :d – 2016-04-26 13:33:24