列转行的Oracle SQL实例
SELECT
T.ELES_FLG,
T.SENDUNIT_NAME,
T.ROM_SEQNO,
LTRIM(MAX(SYS_CONNECT_BY_PATH(T.MODEL, ',')), ',') MODEL
from (SELECT
ELES_FLG,
SENDUNIT_NAME,
ROM_SEQNO,
MODEL,
MIN(MODEL) OVER(PARTITION BY ELES_FLG, SENDUNIT_NAME, ROM_SEQNO) MODEL_MIN,
(ROW_NUMBER() OVER(ORDER BY
ELES_FLG,
SENDUNIT_NAME,
ROM_SEQNO,
MODEL)) +
(DENSE_RANK() OVER(ORDER BY
&nb
相关文档：
extent--最小空间分配单位 --tablespace management
block --最小i/o单位 --segment management
create tablespace james
datafile '/export/home/oracle/oradata/james.dbf'
size 100M --初始的文件大小
autoextend On --自动增长
next 10M� ......
说到软解析（soft prase
）和硬解析（
hard prase
），就不能不说一下
Oracle
对
sql
的处理过程。当你发出一条
sql
语句交付
Oracle
，在执行和获取结果前，
Oracle
对此
sql
将进行几个步骤的处理过程：
1、语法检查（
syntax check
）
&nb ......
今天一个朋友问到这个问题，其实很好解决：
declare @dbname varchar(50)
declare c_database cursor for
select name from master.dbo.sysdatabas ......
SQL Lite
SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.
It is a open source product and can be downloaded from http://www.sqlite.org/ . SQL Lite is best suited in Smart Client architecture, where we can locally store all ......
