一次从日志文件抽取sql的经历

前因后果就留到将来有空再说，先把脚本记下来，这些脚本原型都来自于cu
1.从日志中抽取sql语句

#!/usr/bin/perl
open FH,$ARGV[0] or die "Can't open!\n";

while ($line = <FH>) {
        if ($line =~ /update t_trans_jnl set/) {
                chomp $line;
                sub_write_1($line);
                }
       
}
close FH;
print "Finish ...";

sub sub_write_1{
        my $i = shift;
        open TFH,">>$ARGV[1]" or die "Can't creat!\n";
        print TFH $i."\n";
        close TFH;
}


2.删除一些不需要的内容
open FH,$ARGV[0] or die "Can't open!\n";
while ($line = <FH> ) {
    if ( $line =~ /^  \[uppleRealBaseDB\.mysql\.c-205\]update db sql\[/ ) {
             chomp $line;
        $line =~ s/^  \[uppleRealBaseDB\.mysql\.c-205\]update db sql\[//g;
           chomp $line;
    }
    if($line=~/\]$/)
    {
            $line =~ s/\]$/\;/g;
            chomp $line;
    }
       
    if($line=~/t_trans_jnl/){
           $line =~ s/t_trans_jnl/t_trans_jnl_his/g;
    }      chomp $line;       
  
       sub_write_1($line);
 
}
close FH;
print "Finish ...";

sub sub_write_1{
        my $i = shift;
        open TFH,">>$ARGV[1]" or die "Can't creat!\n";
        print TFH $i."\n";
        close TFH;
}

3.继续过滤，这是为了生成一个插表的文件，上面的只是update
open FH,$ARGV[0] or die "Can't open!\n";

while ($line = <FH> ) {
    if ( $line =~ /and  msgcode like \'/ ) {
             chomp $line;
             $line =~s /^.*where//g;
             chomp $line;
              sub_write_1($line);
    }
         
     
 
}
close FH;
print "Finish ...";

sub sub_write_1{
        my $i = shift;
        open TFH,">>$ARGV[1]" or die "Can't creat!\n";
        print TFH $i."\n";
        close TFH;
}
4.生成插表文件
open FH,$ARGV[0] or die "Can't open!\n";

my $cap2_flag = 0;

while ($line = <FH> ) {

             chomp $line;
        $line =~ s/termid like/\(/g;
           chomp $line;
               $line =~ s/and  mid like/,/g;
                   chomp $line;
               $line =~ s/and  term_seq like/,/g;
                   chomp $line;
               $line =~ s/and  msgcode like/,/g;
                   chomp $line;
               $line =~ s/and b3_pcode like/,/g;
               chomp $line;
               $line =~ s/;/\),/g;
             
       sub_write_1($line);
 
}
close FH;
print "Finish ...";

sub sub_write_1{
               
        my $i = shift;
        open TFH,">>$ARGV[1]" or die "Can't creat!\n";
        if ($cap2_flag==0){
                    print TFH "insert into t_trans_jnl_his(termid,mid,term_seq,msgcode,b3_pcode) values\n";
                    $cap2_flag=1;     
                }else{
            print TFH $i."\n";
        }
        close TFH;
}

大体上是这样的步骤，最后还用ue做了一下替换，比方说插入语句的最后一个‘，’替换成‘；’