Example 1: C1 is a VARCHAR(12) column in table T1. One of its values is the string 'ABCDEFG'. When C1 has the value 'ABCDEFG': Function: Returns: ------------------------------------------------------- SUBSTRIN
string str1="0000"; cmd = new SqlCommand("select AreaID,Name from Area where substring(AreaID,1,2)='" + this.ddl_area.SelectedValue.Substring(0,2) + "' AND substring(AreaID,3,4) <> '0000' AND substring(AreaID,5,2)='00' ", conn); cmd.CommandType = CommandType.Text; SqlDataAd...
Function: Returns: --- SUBSTRING(C1,-2,2,OCTETS) -- a zero-length string SUBSTRING(C1,-2,4,OCTETS) 'A' SUBSTRING(C1,-2,OCTETS) 'ABCDEFG' SUBSTRING(C1,0,1,OCTETS) -- a zero-length string
Db2 具有 NULLS FIRST 和 NULLS LAST 子句,可用于更改 Db2 对 NUL 排序的方式。 SSMA 可以通过检查NULL值来模拟 Db2 ORDER BY 行为。 随后,它首先按指定顺序中的NULL值排序,然后按其他值排序。 如果选择“是”,SSMA 会以模拟 Db2 ORDER BY 行为的方式转换 Db2 语句。 如果选择“否”,SSMA 将忽略 Db2 规则...
-- 更多变态级DB2 SQL写法,AnyOneTable表示任意一个存在的表 select 234 from AnyOneTable; select distinct 234 from AnyOneTable; select distinct 234 as 1 from AnyOneTable; select 'DB2变态级的SQL哈哈' from AnyOneTable; select distinct 'DB2变态级的SQL哈哈' from AnyOneTable; ...
Listing of SQLSTATE valuesThe tables below provide descriptions of SQLSTATE codes that can be returned to applications by DB2® UDB for iSeries™.
select 'DB2变态级的SQL哈哈' from AnyOneTable; select distinct 'DB2变态级的SQL哈哈' from AnyOneTable; select distinct 'DB2变态级的SQL哈哈' as 1 from AnyOneTable; --(嘿嘿,好玩吧,你可以用任意一个表来当sysibm.sysdummy1用.不过不推荐这么做,除非你不记得sysibm.sysdummy1怎么写了,Oracle中(对应dual...
次の手順では、db_datareader とdb_datawriter の役割を Microsoft Entra という名前の example-Azure-AD-application-name ID アプリケーションに割り当てます。 指定したコマンドを実行するときは、example-Azure-AD-application-name をMicrosoft Entra ID アプリケーションの名前に置き換え、ニーズ...
DB2常用SQL的写法(持续更新中...) -- Author: lavasoft -- Date : 2006-12-14-- 创建一个自定义单值类型 create distinct type var_newtype as decimal(5,2) with comparisons; -- var_newtype 类型名 -- decimal(5,2) 实际的类型-- 删除一个自定义单值类型...
DB2中列加上后数据类型也不能改变,唯一能改变的是增加varchar类型的长度。 7、说明:添加主键: Alter table tabname add primary key(col) 说明:删除主键: Alter table tabname drop primary key(col) 8、说明:创建索引:create [unique] index idxname on tabname(col….) 删除索引:drop index idxname ...