sql = sql + " and title like '%" + nkeyword.ToString().Trim() + "%'";怎么解释

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sql = sql +
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sql = sql + " and title like '%" + nkeyword.ToString().Trim() + "%'";怎么解释
sql = sql + " and title like '%" + nkeyword.ToString().Trim() + "%'";怎么解释

sql = sql + " and title like '%" + nkeyword.ToString().Trim() + "%'";怎么解释
抽取title字段包含nkeyword的值的记录,百分号代表通配符,表示其他的字符不论是什么或者多长.例如：有几个记录,title字段值分别是"abc","bc","cb","dc",nkeyword值是"b",那么将抽出abc,bc,cb这三个记录

sql = sql & and 诗名=' & Trim(Text2.Text) & 希望得到解答 sql = sql + and title like '% + nkeyword.ToString().Trim() + %';怎么解释 sql=select * from x where Min>2 and max SQL >select count(*) from Teacher where teacherCode=? and teacherPassword=? java.sql.SQLException:SQL >select count(*) from Teacher where teacherCode=? and teacherPassword=?java.sql.SQLException: Can not issue executeUpdate() for SELECTsat com.mysql. 请问下面这段代码sql=id is not null和下面的sql=sql& and……怎么理解?select case request(eeeet)case print_csql=id is not nullif request(ClientCountry)全部 then'国家/地区不为全部时sql=sql& and ClientCountry='& [SQL]GROUP ORACLE中between…and...是SQL语句中的吗?还是仅限于SQL*PLUS里? SQL中AND B.DEPT_CODE = P.DEPT_CODE(+) 后面的（+） SQL中的not between and 包括等号吗 SQL语言中,条件年龄BETWEEN AND的用法 sql case when请教请教sql中case when 判断语句select 姓名,工龄,(case when (工龄>= '35') then 90%when (工龄>='30' and 工龄='20' and 工龄='10' and 工龄 sql server import and export wizard 是什么安装好 sql server 2008后，就有个这个，请问是干什么用的？ why would software companies choose to support SQL and why would business prefer that SQL be used? sql cast函数用法 sql语句 decimal(18, please stop SQL Injecting sql中having用法 sql references什么意思