Oracle ctl模版

Posted 2021-11-03 yuchunju

将txt数据装载到数据库

数据无””

LOAD DATA

CHARACTER-SET ZHS16GBK

truncate into table a

FIELDS TERMINATED BY ‘,’

TRAILING NULLCOLS

()

数据有””

LOAD DATA

CHARACTER-SET ZHS16GBK

truncate into table a

FIELDS TERMINATED BY ‘,’

OPTIONALLY ENCLOSED BY ‘“‘

()

 

例如一个字段无分隔符

 

LOAD DATA

CHARACTER-SET ZHS16GBK

INFILE ‘error.txt’

BADFILE ‘error.bad’

DISCARDFILE ‘error.dsc’

truncate into table a

(acount position(1 :30))

 

FILEDS给出记录中字段的分隔符。

FILEDS[TERMINATED [BY] (WITHSPACE|’CHARCTER’)]

[OPTIONALLY] ENCLOSED [BY] ‘CHARCTER’]

TERMINATED 读完前一个字段读下一个字段

WITHSPACE 结束符是空格的意思。包括空格，tab,换行符，换页符及回车。

OPTIONALLY ENCLOSED 表示数据由特殊字符括起来。使用OPTIONALLY同时要使用TERMINATED

TRAILING NULLCOLS变表字段没有对应值允许为空

 

导入数据是，如果主键冲突

alter table a drop primary key;

数据加载后再建主键

alter table a add primary key(zz,xx);

违反唯一标志时候

alter table a enable row movement;