Re^9: using system command in regex

Can I get that coloumn names from db???

You can get table and column names from the db using queries:

my (@tables, %map);
my $q = $dbh->prepare("show tables");
$q->execute or die "Error listing tables";
        
while ( my ($table) = $q->fetchrow_array ) {
    push @tables, $table;
}
$q->finish;
for my $table (@tables) {
    $q = $dbh->prepare("describe $table");
    $q->execute or die "Error describing table $table";

    while ( my $hr = $q->fetchrow_hashref ) { 
        push @{ $map{$table} }, $hr->{Field};
    }
    $q->finish;
}
[download]

Now you have a hash %map keyed on table names, whose values are anonymous arrays containing column names. Use this array to build your query:

my $table_name = "CDR";
my $sql = "select ".join ",", map { "sum($_)" } @{$map{$table_name}};
$sql .= " from $table_name where Date = ? and Hour like ?";
[download]

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

Comment on Re^9: using system command in regex Select or Download Code

Replies are listed 'Best First'.
Re^10: using system command in regex by ravi45722 (Pilgrim) on Oct 16, 2015 at 09:50 UTC
Sorry. Its my mistake to not saying for you clearly. Here if I am using join & map its returning all the sum of the columns. but I have percentages in the middle. The percentages also adding and its returning like "590.04%". After seeing this result I changed my program to my $sql = "select sum(Total_MO),sum(Total_MO_sucess),sum(MO_userdep_er +ror),sum(MO_subcrib_error),sum(MO_system_error),sum(Total_MO_success_ +rate)/(select count(Total_MO_success_rate) from CDR where Date = '13- +10-2015' and Hour like '00:%'),sum(Total_AO),sum(Total_AO_sucess),sum +(AO_userdep_error),sum(AO_subcrib_error),sum(AO_system_error),sum(Tot +al_AO_success_rate)/(select count(Total_AO_success_rate) from CDR whe +re Date = '13-10-2015' and Hour like '00:%'),sum(Total_MT_P2P),sum(To +tal_MT_sucess_P2P),sum(MT_P2P_userdep_error),sum(MT_P2P_subcrib_error +),sum(MT_P2P_system_error),sum(Total_MT_P2P_success_rate)/(select cou +nt(Total_AO_success_rate) from CDR where Date = '13-10-2015' and Hour + like '00:%'),sum(Total_MT_A2P),sum(Total_MT_sucess_A2P),sum(MT_A2P_u +serdep_error),sum(MT_A2P_subcrib_error),sum(MT_A2P_system_error),sum( +Total_MT_A2P_success_rate)/(select count(Total_AO_success_rate) from +CDR where Date = '13-10-2015' and Hour like '00:%'),sum(Total_AT),sum +(Total_AT_sucess),sum(AT_ESMEdep_error),sum(AT_network_error),sum(AT_ +system_error),sum(Total_AT_success_rate)/(select count(Total_AO_succe +ss_rate) from CDR where Date = '13-10-2015' and Hour like '00:%'),sum +(P2P_FDA_count),sum(P2P_FDA_success_count),sum(P2P_FDA_success_rate)/ +(select count(Total_AO_success_rate) from CDR where Date = '13-10-201 +5' and Hour like '00:%'),sum(A2P_FDA_count),sum(A2P_FDA_success_count +),sum(A2P_FDA_success_rate)/(select count(Total_AO_success_rate) from + CDR where Date = '13-10-2015' and Hour like '00:%'),sum(Total_Count) +,sum(Total_TPS),max(Greatest_TPS) from CDR where Date = ? and Hour li +ke ?"; foreach my $hour ("00","01","02","03","04","05","06","07","08","09",10 +..23) { $sth->execute($date, "$hour:%") or die $DBI::errstr; my @my_array = (); push(@my_array,$hour); push(@my_array,$sth->fetchrow_array()); my $col = 0; print @my_array,$/; foreach my $value (@my_array) { $sheet->AddCell( $row, $col, $value ); ++$col; } $row++; } [download] Its too ugly I know. But have a look. Here I have Percentages & the last column is Greatest tps. To achieve this `sum(A2P_FDA_success_rate)/(select count(Total_AO_success_rate) from CD +R where Date = '13-10-2015' and Hour like '00:%') max(Greatest_TPS)` [download] I need to write like this. Now show me a shortcut please.	[reply] [d/l] [select]

Replies are listed 'Best First'.

Re^10: using system command in regex
by ravi45722 (Pilgrim) on Oct 16, 2015 at 09:50 UTC

Sorry. Its my mistake to not saying for you clearly. Here if I am using join & map its returning all the sum of the columns. but I have percentages in the middle. The percentages also adding and its returning like "590.04%". After seeing this result I changed my program to

my $sql = "select sum(Total_MO),sum(Total_MO_sucess),sum(MO_userdep_er
+ror),sum(MO_subcrib_error),sum(MO_system_error),sum(Total_MO_success_
+rate)/(select count(Total_MO_success_rate) from CDR where Date = '13-
+10-2015' and Hour like '00:%'),sum(Total_AO),sum(Total_AO_sucess),sum
+(AO_userdep_error),sum(AO_subcrib_error),sum(AO_system_error),sum(Tot
+al_AO_success_rate)/(select count(Total_AO_success_rate) from CDR whe
+re Date = '13-10-2015' and Hour like '00:%'),sum(Total_MT_P2P),sum(To
+tal_MT_sucess_P2P),sum(MT_P2P_userdep_error),sum(MT_P2P_subcrib_error
+),sum(MT_P2P_system_error),sum(Total_MT_P2P_success_rate)/(select cou
+nt(Total_AO_success_rate) from CDR where Date = '13-10-2015' and Hour
+ like '00:%'),sum(Total_MT_A2P),sum(Total_MT_sucess_A2P),sum(MT_A2P_u
+serdep_error),sum(MT_A2P_subcrib_error),sum(MT_A2P_system_error),sum(
+Total_MT_A2P_success_rate)/(select count(Total_AO_success_rate) from 
+CDR where Date = '13-10-2015' and Hour like '00:%'),sum(Total_AT),sum
+(Total_AT_sucess),sum(AT_ESMEdep_error),sum(AT_network_error),sum(AT_
+system_error),sum(Total_AT_success_rate)/(select count(Total_AO_succe
+ss_rate) from CDR where Date = '13-10-2015' and Hour like '00:%'),sum
+(P2P_FDA_count),sum(P2P_FDA_success_count),sum(P2P_FDA_success_rate)/
+(select count(Total_AO_success_rate) from CDR where Date = '13-10-201
+5' and Hour like '00:%'),sum(A2P_FDA_count),sum(A2P_FDA_success_count
+),sum(A2P_FDA_success_rate)/(select count(Total_AO_success_rate) from
+ CDR where Date = '13-10-2015' and Hour like '00:%'),sum(Total_Count)
+,sum(Total_TPS),max(Greatest_TPS) from CDR where Date = ? and Hour li
+ke ?";

foreach my $hour ("00","01","02","03","04","05","06","07","08","09",10
+..23)
{
        $sth->execute($date, "$hour:%") or die $DBI::errstr;
        my @my_array = ();
        push(@my_array,$hour);
        push(@my_array,$sth->fetchrow_array());
        my $col = 0;
        print @my_array,$/;
        foreach my $value (@my_array)
        {
                $sheet->AddCell( $row, $col, $value );
                ++$col;
        }
        $row++;
}
[download]

Its too ugly I know. But have a look. Here I have Percentages & the last column is Greatest tps. To achieve this

sum(A2P_FDA_success_rate)/(select count(Total_AO_success_rate) from CD
+R where Date = '13-10-2015' and Hour like '00:%')
max(Greatest_TPS)
[download]

I need to write like this. Now show me a shortcut please.

[reply]
[d/l]
[select]