我有一个包含以下内容的文件。我需要做的就是过滤改变脚本有独特的其中的关键字并将其移动到另一个文件。我尝试使用sed -n '/ALTER TABLE/,/UNIQUE("ID");/p' file
.但这没有用。
ALTER TABLE RELEASE.ACL_ENTRY
ADD CONSTRAINT RELEASE.FK5111A
FOREIGN KEY( ACL_OID )
REFERENCES RELEASE.ACL ( OID )
ON DELETE CASCADE
--ON UPDATE NO ACTION ;
ALTER TABLE RELEASE.ACTION_DESC
ADD CONSTRAINT RELEASE.UN2160A
UNIQUE( ID_MASK ) ;
ALTER TABLE RELEASE.ACTION_DESC
ADD CONSTRAINT RELEASE.UN2160B
UNIQUE( NAME ) ;
ALTER TABLE RELEASE.ACTION_DESC_LOD
ADD CONSTRAINT RELEASE.FK2170
FOREIGN KEY( ACTION_DESC_OID )
REFERENCES RELEASE.ACTION_DESC ( OID )
ON DELETE CASCADE
--ON UPDATE NO ACTION ;
ALTER TABLE RELEASE.ACTION_SET
ADD CONSTRAINT RELEASE.UN2120A
UNIQUE( "ID" ) ;
ALTER TABLE RELEASE.ACTION_SET
ADD CONSTRAINT RELEASE.UN2120B
UNIQUE( NAME ) ;
ALTER TABLE RELEASE.ACTION_SET_LOD
ADD CONSTRAINT RELEASE.FK2150A
FOREIGN KEY( ACTION_SET_OID )
REFERENCES RELEASE.ACTION_SET ( OID )
ON DELETE CASCADE
--ON UPDATE NO ACTION ;
ALTER TABLE RELEASE.APP_DESC
ADD CONSTRAINT RELEASE.FK20A
FOREIGN KEY( WEB_MOD_OID )
REFERENCES RELEASE.WEB_MOD ( OID )
ON DELETE CASCADE
--ON UPDATE NO ACTION ;
ALTER TABLE RELEASE.APP_DESC
ADD CONSTRAINT RELEASE.CC20B
CHECK( ( WEB_MOD_OID IS NOT NULL ) AND ( WEB_MOD_SL IS NULL ) ) ;
输出应类似于不同文件中的以下内容。
ALTER TABLE RELEASE.ACTION_DESC
ADD CONSTRAINT RELEASE.UN2160A
UNIQUE( ID_MASK ) ;
ALTER TABLE RELEASE.ACTION_DESC
ADD CONSTRAINT RELEASE.UN2160B
UNIQUE( NAME ) ;
ALTER TABLE RELEASE.ACTION_SET
ADD CONSTRAINT RELEASE.UN2120A
UNIQUE( "ID" ) ;
ALTER TABLE RELEASE.ACTION_SET
ADD CONSTRAINT RELEASE.UN2120B
UNIQUE( NAME ) ;
答案1
cat inputfile | tr '\n' '@' | sed -e 's/;/;\n/g' | grep UNIQUE | tr '@' '\n'
答案2
sed
你只能通过
sed ':1;/ALTER/N;/;/!b1;/UNIQUE/!d' inputfile > outputfile
或与模式空间使用相同
sed 'H;/ALTER/h;/;/x;/UNIQUE/!d' inputfile > outputfile
或者您可以使用awk
相同的样式:
awk 'b{b=b "\n" $0}/ALTER/{b=$0}/;/{if(b~/UNIQUE/)print b;b=""}' inputfile