avinliu 发表于 2011-12-22 08:54

oracle学习步骤2_应用2(复制表数据,复制表结构)

<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 3" align=center><B><SPAN lang=EN-US style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><a href="http://yangzb.iteye.com/blog/1132591" target="_blank"><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">oracle</SPAN><SPAN lang=EN-US style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><SPAN lang=EN-US>复制表数据,复制表结构</SPAN></SPAN><SPAN lang=EN-US style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><SPAN lang=EN-US> </SPAN></SPAN></A></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">1</SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">、不同用户之间的表数据复制<SPAN lang=EN-US></SPAN></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">2</SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">、同用户表之间的数据复制<SPAN lang=EN-US></SPAN></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">3</SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">、<SPAN lang=EN-US>B.x</SPAN>中个别字段转移到<SPAN lang=EN-US>B.y</SPAN>的相同字段<SPAN lang=EN-US></SPAN></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">4</SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">、只复制表结构 加入了一个永远不可能成立的条件<SPAN lang=EN-US>1=2</SPAN>,则此时表示的是只复制表结构,但是不复制表内容<SPAN lang=EN-US></SPAN></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">5</SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">、完全复制表<SPAN lang=EN-US>(</SPAN>包括创建表和复制表中的记录<SPAN lang=EN-US>)&nbsp;</SPAN></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">6</SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体; mso-bidi-font-size: 10.5pt">、将多个表数据插入一个表中<SPAN lang=EN-US></SPAN></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"><FONT face="Times New Roman">7</FONT></SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt">、创建用户</SPAN></U><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"><FONT face="Times New Roman">budget_zlgc</FONT></SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt">,权限和</SPAN></U><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"><FONT face="Times New Roman">budget</FONT></SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt">相同</SPAN></U><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"><FONT face="Times New Roman">,</FONT></SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt">(</SPAN></U><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"><FONT face="Times New Roman">A</FONT></SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt">、只复制所有表结构</SPAN></U><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"><FONT face="Times New Roman">B</FONT></SPAN></U><U><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 10.5pt">、复制所有表所有信息)</SPAN></U><U><SPAN lang=EN-US style="mso-bidi-font-size: 10.5pt"></SPAN></U></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">1.</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">不同用户之间的表数据复制<SPAN lang=EN-US> <BR></SPAN></SPAN></B><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">对于在一个数据库上的两个用户<SPAN lang=EN-US>A</SPAN>和<SPAN lang=EN-US>B</SPAN>,假如需要把<SPAN lang=EN-US>A</SPAN>下表<SPAN lang=EN-US>old</SPAN>的数据复制到<SPAN lang=EN-US>B</SPAN>下的<SPAN lang=EN-US>new</SPAN>,请使用权限足够的用户登入<SPAN lang=EN-US>sqlplus</SPAN>:<SPAN lang=EN-US><BR>insert into B.new(select * from A.old);</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">如果需要加条件限制,比如复制当天的<SPAN lang=EN-US>A.old</SPAN>数据<SPAN lang=EN-US><BR>insert into B.new(select * from A.old where date=GMT); <BR></SPAN>蓝色斜线处为选择条件<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">2.</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">同用户表之间的数据复制 </SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR></SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">用户<SPAN lang=EN-US>B</SPAN>下有两个表:<SPAN lang=EN-US>B.x</SPAN>和<SPAN lang=EN-US>B.y</SPAN>,如果需要从表<SPAN lang=EN-US>x</SPAN>转移数据到表<SPAN lang=EN-US>y</SPAN>,使用用户<SPAN lang=EN-US>B</SPAN>登陆<SPAN lang=EN-US>sqlpus</SPAN>即可:<SPAN lang=EN-US><BR>insert into </SPAN>目标表<SPAN lang=EN-US>y select * from x where log_id&gt;'3049' -- </SPAN>复制数据<SPAN lang=EN-US> <BR></SPAN>注意:要示目标表<SPAN lang=EN-US>y</SPAN>必须事先创建好<SPAN lang=EN-US><BR></SPAN>如<SPAN lang=EN-US>insert into bs_log2 select * from bs_log where log_id&gt;'3049'&nbsp;&nbsp;&nbsp;&nbsp;</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR><B style="mso-bidi-font-weight: normal">3.B.x</B></SPAN><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">中个别字段转移到<SPAN lang=EN-US>B.y</SPAN>的相同字段 </SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR>--</SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">如果两个表结构一样<SPAN lang=EN-US><BR>insert into table_name_new select * from table_name_old <BR></SPAN>如果两个表结构不一样:<SPAN lang=EN-US><BR>insert into y(</SPAN>字段<SPAN lang=EN-US>1,</SPAN>字段<SPAN lang=EN-US>2) select </SPAN>字段<SPAN lang=EN-US>1,</SPAN>字段<SPAN lang=EN-US>2 from x</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">4.</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">只复制表结构 加入了一个永远不可能成立的条件<SPAN lang=EN-US>1=2</SPAN>,则此时表示的是只复制表结构,但是不复制表内容<SPAN lang=EN-US>&nbsp;&nbsp;</SPAN></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"> <BR>create table </SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">用户名<SPAN lang=EN-US>.</SPAN>表名<SPAN lang=EN-US> as select * from </SPAN>用户名<SPAN lang=EN-US>.</SPAN>表名<SPAN lang=EN-US> where 1=2<BR></SPAN>如<SPAN lang=EN-US>create table zdsy.bs_log2 as select * from zdsy.bs_log where 1=2</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">5</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">完全复制表<SPAN lang=EN-US>(</SPAN>包括创建表和复制表中的记录<SPAN lang=EN-US>)</SPAN></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR>create table test as select * from bs_log <SPAN style="mso-spacerun: yes">&nbsp;</SPAN>--bs_log</SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">是被复制表<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR><B style="mso-bidi-font-weight: normal">6 </B></SPAN><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">将多个表数据插入一个表中</SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR>insert into </SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">目标表<SPAN lang=EN-US>test(</SPAN>字段<SPAN lang=EN-US>1</SPAN>。。。字段<SPAN lang=EN-US>n) (select </SPAN>字段<SPAN lang=EN-US>1.</SPAN>。。。。字段<SPAN lang=EN-US>n) from </SPAN>表<SPAN lang=EN-US> union all select </SPAN>字段<SPAN lang=EN-US>1.....</SPAN>字段<SPAN lang=EN-US>n from </SPAN>表<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">7</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、创建用户</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget_zlgc</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,权限和</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相同</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">,</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">(</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">A</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、只复制所有表结构</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">B</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、复制所有表所有信息)</SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 12pt"></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">创建用户</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget_zlgc</FONT></SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,并导出</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budge</FONT></SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用户数据</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt"></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">exp userid="\"sys/sys as sysdba"\" file='/backup/expdb/oa0824.dmp' log='/backup/expdb/oaex0825.log'<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>owner=budget ignore=Y buffer=256000000</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">A</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用户所有表,表结构和</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相同,(无数据)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">imp userid="\"sys/sys as sysdba"\" file='/backup/expdb/oa0824.dmp' log='/backup/expdb/oa0825.log'<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>fromuser=budget touser=budget_zlgc ignore=Y buffer=256000000 <SPAN style="COLOR: red">rows=n</SPAN></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">B</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用户所有表,表结构、数据和</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">budget</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相同</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 12pt"></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">imp userid="\"sys/sys as sysdba"\" file='/backup/expdb/oa0824.dmp' log='/backup/expdb/oa0825.log'<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>fromuser=budget touser=budget_zlgc ignore=Y</FONT></SPAN></P>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体"><BR><B style="mso-bidi-font-weight: normal">=====================================================<BR>oracle</B></SPAN><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">和<SPAN lang=EN-US>mssql</SPAN>中复制表的比较<SPAN lang=EN-US></SPAN></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">库内数据复制<SPAN lang=EN-US><BR>MS SQL Server</SPAN>:<SPAN lang=EN-US> <BR>Insert into </SPAN>复制表名称<SPAN lang=EN-US> select </SPAN>语句<SPAN lang=EN-US> (</SPAN>复制表已经存在<SPAN lang=EN-US>)<BR>select </SPAN>字段列表<SPAN lang=EN-US> into </SPAN>复制表名称<SPAN lang=EN-US> from </SPAN>表<SPAN lang=EN-US> (</SPAN>复制表不存在<SPAN lang=EN-US>)</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">Oracle </SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">:<SPAN lang=EN-US><BR>Insert into </SPAN>复制表名称<SPAN lang=EN-US> select </SPAN>语句<SPAN lang=EN-US> (</SPAN>复制表已经存在<SPAN lang=EN-US>)<BR>create table </SPAN>复制表名称<SPAN lang=EN-US> as select </SPAN>语句<SPAN lang=EN-US> (</SPAN>复制表不存在<SPAN lang=EN-US>)</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">多表更新、删除<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">一条更新语句是不能更新多张表的,除非使用触发器隐含更新,我这里说的意思是:根据其他表数据更新你要更新的表一般形式:<SPAN lang=EN-US><BR>MS SQL Server <BR>update ASET </SPAN>字段<SPAN lang=EN-US>1=B</SPAN>表字段表达式<SPAN lang=EN-US>,</SPAN>字段<SPAN lang=EN-US>2=B</SPAN>表字段表达式<SPAN lang=EN-US>from BWHERE </SPAN>逻辑表达式<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">Oracle <BR>update ASET </SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">字段<SPAN lang=EN-US>1=(select </SPAN>字段表达式<SPAN lang=EN-US> from B WHERE ...),</SPAN>字段<SPAN lang=EN-US>2=(select </SPAN>字段表达式<SPAN lang=EN-US> from B WHERE ...) WHERE </SPAN>逻辑表达式<SPAN lang=EN-US><BR></SPAN>从以上来看,感觉<SPAN lang=EN-US>oracle</SPAN>没有<SPAN lang=EN-US>ms sql</SPAN>好,主要原因:假如<SPAN lang=EN-US>A</SPAN>需要多个字段更新,<SPAN lang=EN-US>MS_SQL </SPAN>语句更简练你知道刚学数据库的人怎么做上面这件事情<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">吗,他们使用游标一条一条的处理<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">====导入==导出===========<SPAN lang=EN-US><BR></SPAN>(<SPAN lang=EN-US>1</SPAN>)导出<SPAN lang=EN-US><BR>exp <a href="mailto:ff/ff@orcl" target="_blank">ff/ff@orcl</A> file='d:ff.dmp' tables=customers direct=y<BR></SPAN>使用<SPAN lang=EN-US>exp </SPAN>输出。输入的为需要备份的用户表的账号和密码<SPAN lang=EN-US>,</SPAN>根据提示一直点回车就<SPAN lang=EN-US>OK </SPAN>结束后将会出现一个<SPAN lang=EN-US>ff.DMP</SPAN>文件<SPAN lang=EN-US>,</SPAN>此文件为备份数据。<SPAN lang=EN-US><BR></SPAN>导出时可以选择导出:<SPAN lang=EN-US>1.</SPAN>整个数据库(需具备<SPAN lang=EN-US>dba</SPAN>权限);<SPAN lang=EN-US>2.</SPAN>用户(包括表、视图和其它);<SPAN lang=EN-US>3.</SPAN>表(只包含表,不导出视图);<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">(<SPAN lang=EN-US>2</SPAN>)导入<SPAN lang=EN-US><BR>create user ly identified by pw default tablespace users quota 10M on users; <BR></SPAN>创建新用户 用户名为<SPAN lang=EN-US>ly </SPAN>密码为<SPAN lang=EN-US>pw </SPAN>默认表空间为此空间<SPAN lang=EN-US>,</SPAN>配额为<SPAN lang=EN-US>10M<BR>grant connect,resource,dba to ly;<BR></SPAN>赋予<SPAN lang=EN-US>ly</SPAN>权限(<SPAN lang=EN-US>1.</SPAN>连接;<SPAN lang=EN-US>2.</SPAN>资源;<SPAN lang=EN-US>3.dba</SPAN>权限,必须具备才能执行导入!)<SPAN lang=EN-US><BR>grant create session,create table,create view,unlimited tablespaces to ly; <BR></SPAN>赋予<SPAN lang=EN-US>ly</SPAN>其它常用权限<SPAN lang=EN-US>(1.</SPAN>登陆到服务器<SPAN lang=EN-US>,2.</SPAN>创建表<SPAN lang=EN-US>,3.</SPAN>创建视图<SPAN lang=EN-US>,4.</SPAN>无限表空间<SPAN lang=EN-US>)<BR>imp <a href="mailto:ly/ly@ORCL" target="_blank">ly/ly@ORCL</A> fromuser=ff touser=ly file='d:ff.dmp' constraints=n<BR></SPAN>使用<SPAN lang=EN-US> imp </SPAN>输入。输入需要导入的用户的用户名和密码 然后点回车<SPAN lang=EN-US>,</SPAN>根据提示一直到再次要求你输入用户名的地方。<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">=================<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">sql_server</SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">不同数据库间复制表<SPAN lang=EN-US><BR><BR></SPAN>不同数据库表结构 和数据的复制 :<SPAN lang=EN-US> <BR></SPAN>目标数据库不存在要导入的表时:<SPAN lang=EN-US> <BR>example</SPAN>:<SPAN lang=EN-US> <BR>xuexiao</SPAN>为目标数据库,<SPAN lang=EN-US>teaching</SPAN>为源数据库,<SPAN lang=EN-US>dbo.course_list</SPAN>已经存在于<SPAN lang=EN-US>teaching</SPAN>,想在没有此表的<SPAN lang=EN-US>xuexiao</SPAN>库中复制一个用下面的语句完成<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">:<SPAN lang=EN-US> <BR>select * into xuexiao.dbo.course_list from teaching.dbo.course_list <BR><BR></SPAN>不同数据库之间复制表的数据的方法<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">当表目标表存在时:<SPAN lang=EN-US> <BR>insert into </SPAN>目的数据库<SPAN lang=EN-US>..</SPAN>表<SPAN lang=EN-US> select * from </SPAN>源数据库<SPAN lang=EN-US>..</SPAN>表<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">当目标表不存在时:<SPAN lang=EN-US> <BR>select * into </SPAN>目的数据库<SPAN lang=EN-US>..</SPAN>表<SPAN lang=EN-US> from </SPAN>源数据库<SPAN lang=EN-US>..</SPAN>表<SPAN lang=EN-US> <BR>=================================================<BR></SPAN>如下,表<SPAN lang=EN-US>a</SPAN>是数据库中已经存在的表,<SPAN lang=EN-US>b</SPAN>是准备根据表<SPAN lang=EN-US>a</SPAN>进行复制创建的表:<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">  <SPAN lang=EN-US>1</SPAN>、只复制表结构的<SPAN lang=EN-US>sql<BR></SPAN>  <SPAN lang=EN-US>create table b as select * from a where 1&lt;&gt;1</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">  <SPAN lang=EN-US>2</SPAN>、即复制表结构又复制表中数据的<SPAN lang=EN-US>sql<BR></SPAN>  <SPAN lang=EN-US>create table b as select * from a</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">  <SPAN lang=EN-US>3</SPAN>、复制表的制定字段的<SPAN lang=EN-US>sql<BR></SPAN>  <SPAN lang=EN-US>create table b as select row_id,name,age from a where 1&lt;&gt;1//</SPAN>前提是<SPAN lang=EN-US>row_id,name,age</SPAN>都是<SPAN lang=EN-US>a</SPAN>表的列<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">  <SPAN lang=EN-US>4</SPAN>、复制表的指定字段及这些指定字段的数据的<SPAN lang=EN-US>sql<BR></SPAN>  <SPAN lang=EN-US>create table b as select row_id,name,age from a</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">  以上语句虽然能够很容易的根据<SPAN lang=EN-US>a</SPAN>表结构复制创建<SPAN lang=EN-US>b</SPAN>表,但是<SPAN lang=EN-US>a</SPAN>表的索引等却复制不了,需要在<SPAN lang=EN-US>b</SPAN>中手动建立。<SPAN lang=EN-US></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">  <SPAN lang=EN-US>5</SPAN>、<SPAN lang=EN-US>insert into </SPAN>会将查询结果保存到已经存在的表中<SPAN lang=EN-US><BR></SPAN>  <SPAN lang=EN-US>insert into t2(column1, column2, ....) select column1, column2, .... from t1</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">&nbsp;</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">&nbsp;</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" align=left><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">1</SPAN><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 0pt; mso-bidi-font-family: 宋体">、获得单个表和索引<SPAN lang=EN-US>DDL</SPAN>语句的方法:<SPAN lang=EN-US> <BR><BR>----------------------------------------------------------------------- <BR><BR>set &nbsp; heading &nbsp; off; <BR><BR>set &nbsp; echo &nbsp; off; <BR><BR>Set &nbsp; pages &nbsp; 999; <BR><BR>set &nbsp; long &nbsp; 90000; <BR><BR></SPAN> <SPAN lang=EN-US> <BR><BR>spool &nbsp; get_single.sql <BR><BR>select &nbsp; dbms_metadata.get_ddl( 'TABLE ', 'SZT_PQSO2 ', 'SHQSYS ') &nbsp; from &nbsp; dual; <BR><BR>select &nbsp; dbms_metadata.get_ddl( 'INDEX ', 'INDXX_PQZJYW ', 'SHQSYS ') &nbsp; from &nbsp; dual; <BR><BR>spool &nbsp; off;</SPAN></SPAN></P>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><FONT face="Times New Roman">uffer=256000000 </FONT></SPAN></P>
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查看完整版本: oracle学习步骤2_应用2(复制表数据,复制表结构)