大端 m m[ a +: b ] == m[ (a+b-1) : a ] m[ a -: b ] == m[ a : (a-b+1) ] 小端 n n[ a +: b ] == n[ a : (a+b-1) ] n[ a -: b ] == n[ (a-b+1) : a ] module top; `timescale 10ns/1ns reg [31:0] big_vect = 'h12345678; reg [0:31] little_vect = 'h87654321; reg [63:…
SqlCommand对象的字符串SQL命令可以做多个,以查询为例,用到SqlDataReader的一些方法,如ExecuteReader(),Read()(一条命令内的移动至下一记录),NextResult()(移动到下一个命令并执行). using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Data.SqlClient; using System.Da…
INSERT INTO SELECT语句与SELECT INTO FROM语句,都是将一个结果集插入到一个表中: #INSERT INTO SELECT语句 1.语法形式: Insert into Table2(field1,field2,…) select value1,value2,… from Table1 或 Insert into Table2 select * from Table1 2.限定条件: (1)Table2必须存在,并且字段field,field2…也必须存在: (2)如…
异常这个错误java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=select], {ExactMatcher:fDisplayName=select(com.rjj.demo.DemoApplicationTests)], {LeadingIdentifierMatcher:fClassName=com.rjj.demo.DemoApplicationTests,fLeadingIdentifier=s…