代码查询和调试 代码查询 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Text.RegularExpressions; namespace m1w2d6_debug { struct Point2d { } class Program { static void Main(string
select * from bd_cubasdoc where pk_cubasdoc in ( ') 查询空客商客户银行的单位名称 select b.custcode,b.custname, d.bankacc,d.bankname,d.unitname,d.ts from bd_accbank d, bd_cubasdoc b,bd_custbank a where b.pk_cubasdoc=a.pk_cubasdoc and d.pk_accbank=a.pk_accbank and d
问题:SQL语句查询不到记录,导致空指针异常 SQL语句: select * from mixinfo where infotype='网站简介' 代码: publicList<HashMap> select(String sql) { System.out.println(sql); List<HashMap> list = new ArrayList(); try { Statement st = conn.createStatement(); ResultSet rs = s