有一个SQL语句需要优化，高手帮帮忙

[fandylee828]

是分词后的查询，数据一多久很慢，这样的查询2000条数据要2秒多才能出结果，求优化，谢谢

SELECT 
			dbo.userlib.u_id, 
			dbo.Company.C_company, 
			DATEDIFF(day, dbo.userlib.U_regdate, GETDATE()) AS years, 
			dbo.userlib.U_level, 
			Keyword = CASE WHEN dbo.Company.c_Keyword like '本机地址' 
								or dbo.Company.c_Keyword like '%[，]本机地址[，]%'
								or dbo.Company.c_Keyword like '%[，]本机地址'
								or dbo.Company.c_Keyword like '本机地址' THEN 1
						ELSE 0 END,
			CASE WHEN u_level = 3 THEN 3 
                    WHEN u_level = 2 THEN 3 
					WHEN u_level = 1 THEN 2
                    ELSE 0 END AS vip_level,
			c_keyword = CASE WHEN dbo.company.c_Keyword IS NULL THEN ''''
					ELSE dbo.company.c_Keyword END,
			dbo.Company.c_hits,
			dbo.company.c_address,
			dbo.company.c_tel,
			dbo.company.c_a_id,
			dbo.company.c_c_id,
			dbo.company.c_cy_id,
			dbo.company.c_description,
			c_rtime = case when dbo.company.c_RefreshTime < getdate() 
								or dbo.Company.c_Keyword not like '本机地址' 
								and dbo.Company.c_Keyword not like '%[，]本机地址[，]%' 
								and dbo.Company.c_Keyword not like '%[，]本机地址'
								and dbo.Company.c_Keyword not like '本机地址[，]%' then '1987-08-28'
						else dbo.company.c_RefreshTime end
		FROM         
			dbo.Company INNER JOIN
			dbo.userlib ON dbo.Company.C_u_id = dbo.userlib.u_id
		WHERE userlib.u_yes = 1 AND  c_company like '%本机地址%' or c_address like '%本机地址%' or c_tel like '%本机地址%' or  c_company like '%地址%' or c_address like '%地址%' or c_tel like '%地址%' or  c_company like '%本机%' or c_address like '%本机%' or c_tel like '%本机%' or  c_company like '%地%' or c_address like '%地%' or c_tel like '%地%' or  c_company like '%址%' or c_address like '%址%' or c_tel like '%址%' or  c_company like '%本%' or c_address like '%本%' or c_tel like '%本%' or  c_company like '%机%' or c_address like '%机%' or c_tel like '%机%' or c_keyword like '本机地址' or c_keyword like '%[，]本机地址[，]%' or c_keyword like '%[，]本机地址' or c_keyword like '本机地址[，]%'

[dawugui]

你这么多or条件,基本上使用的是like,快不起来的.

[SQL777]

都一些LIKE 语句没啥好办法。全文索引吧

你AND 与OR的地方都不打括号的？

[唐诗三百首]

模糊查询,不好优化耶.

[shshjun]

建议引入视图,然后从视图中查询.视图是预编译的,能好一点.