/[pgdiff]/pgdiff
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 1.3 by dpavlin, Tue Aug 12 12:00:07 2003 UTC revision 1.5 by dpavlin, Tue Aug 12 20:38:02 2003 UTC
# Line 11  use strict; Line 11  use strict;
11  use Getopt::Long;  use Getopt::Long;
12  use DBI;  use DBI;
13  use Data::Dumper;  use Data::Dumper;
14    use Pg::Scheme;
15    
16  $| = 1;  $| = 1;
17    
# Line 105  sub debug { Line 106  sub debug {
106    
107  $verbose = 1 if ($debug);  $verbose = 1 if ($debug);
108    
109    # init object for scheme in master database
110    my $mscheme = new Pg::Scheme( 'dbh' => $mdbh, 'DEBUG' => 0 ) || die "can't query schema";
111    
112  # which tables to compare?  # which tables to compare?
113    
114  my @tables;  my @tables = $mscheme->list_tables($tables);
 if ($tables) {  
         @tables = split(/,/,$tables);  
 } else {  
         # take all tables  
         #$sql="select tablename from pg_tables where tablename not like 'pg_%' and tablename not like '_rserv_%'";  
         # show tables (based on psql \dt)  
         $sql = "  
         SELECT c.relname as table  
         FROM pg_catalog.pg_class c  
                 LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace  
         WHERE c.relkind = 'r'  
                 AND n.nspname NOT IN ('pg_catalog', 'pg_toast')  
                 AND pg_catalog.pg_table_is_visible(c.oid)  
                 and c.relname not like '_rserv_%'  
         ";  
         foreach my $table (@tables) {  
                 $sql .= " and c.relname like '$table'";  
         }  
         my $sth = $mdbh->prepare($sql);  
         $sth->execute() || die;  
         while(my $row = $sth->fetchrow_hashref()) {  
                 push @tables,$row->{table};  
         }  
 }  
115    
116  debug "Comparing tables: ".join(", ",@tables)."\n";  debug "Comparing tables: ".join(", ",@tables)."\n";
117    
# Line 140  my $diff_total = 0; Line 120  my $diff_total = 0;
120    
121  foreach my $table (@tables) {  foreach my $table (@tables) {
122    
123          my ($sth);          my $sth;
124    
125          # find table oid          # diff schema
         $sql = "  
         SELECT c.oid, n.nspname, c.relname  
         FROM pg_catalog.pg_class c  
         LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace  
         WHERE pg_catalog.pg_table_is_visible(c.oid)  
         AND c.relname = '$table'  
         ORDER BY 2, 3  
         ";  
   
         $sth = $mdbh->prepare($sql);  
         $sth->execute() || die;  
         my $row = $sth->fetchrow_hashref();  
         if (! $row) {  
                 print STDERR "Can't find OID of table '$table'\n";  
                 exit 1;  
         }  
126    
127          my $oid = $row->{oid};          # all colums (for insert)
128            my @cols = @{$mscheme->cols($table)};
129    
130          # diff schema          # colums compared by a=b
131            my @cols_notnull = @{$mscheme->cols_notnull($table)};
132    
133            # colums compared by a=b or a is null and b is null
134            my @cols_null = @{$mscheme->cols_null($table)};
135    
136            # primary key columns
137            my @cols_pk = @{$mscheme->cols_pk($table)};
138    
139            # columns to compare (not in primary key)
140            my @cols_cmp = @{$mscheme->cols_notpk($table)};
141    
         my @cols_notnull;# colums compared by a=b  
         my @cols_null;  # colums compared by a=b or a is null and b is null  
142          my @cols_skip;  # skipped columns          my @cols_skip;  # skipped columns
143          my @cols_test;  # all colums to test (without skipped)          my @cols_test;  # all colums to test (without skipped)
         my @cols;       # all colums (for insert)  
   
         my $sql="  
 SELECT a.attname,  
 pg_catalog.format_type(a.atttypid, a.atttypmod),  
 a.attnotnull, a.atthasdef, a.attnum  
 FROM pg_catalog.pg_attribute a  
 WHERE a.attrelid = $oid AND a.attnum > 0 AND NOT a.attisdropped  
 ORDER BY a.attnum  
 ";  
144    
145          $sth = $mdbh->prepare($sql);          foreach my $row (@{$mscheme->pg_attribute($table)}) {
         $sth->execute() || die;  
         while(my $row = $sth->fetchrow_hashref()) {  
146                  # attname | format_type | attnotnull | atthasdef | attnum                  # attname | format_type | attnotnull | atthasdef | attnum
147    
                 push @cols,$row->{attname};  
   
148                  # FIXME: do something with attributes which shouldn't be compared                  # FIXME: do something with attributes which shouldn't be compared
149                  # (date, time, datetime, timestamp)                  # (date, time, datetime, timestamp)
150                  if ($row->{format_type} =~ /(date)|(time)/i) {                  if ($row->{format_type} =~ /(date)|(time)/i) {
151                          push @cols_skip,$row->{attname};                          push @cols_skip,$row->{attname};
                         next;  
                 }  
   
                 push @cols_test,$row->{attname};  
   
                 if ($row->{attnotnull}) {  
                         push @cols_notnull,$row->{attname};  
152                  } else {                  } else {
153                          push @cols_null,$row->{attname};                          push @cols_test,$row->{attname};
154                  }                  }
155    
156          }          }
         $sth->finish();  
157    
158          if ($debug) {          if ($debug) {
159                  print STDERR "DEBUG: table $table [$oid] not null: (",join(", ",@cols_notnull),")";                  print STDERR "DEBUG: table $table not null cols: (",join(", ",@cols_notnull),")";
160                  print STDERR " - null: (",join(", ",@cols_null),")" if (@cols_null);                  print STDERR " - null cols: (",join(", ",@cols_null),")" if (@cols_null);
161                  print STDERR " - skip: (",join(", ",@cols_skip),")" if (@cols_skip);                  print STDERR " - skip cols: (",join(", ",@cols_skip),")" if (@cols_skip);
162                  print STDERR "\n";                  print STDERR "\n";
163          }          }
164    
165          # diff data          # diff data
166    
         my @cols_pk;    # columns which are primary key  
         my %in_pk;  
   
         $sql="  
 SELECT  
         i.indexrelid as indexrelid, i.indrelid as indrelid,  
         count(a.attname) as cols_in_pk  
 FROM  
         pg_catalog.pg_class c,  
         pg_catalog.pg_index i,  
         pg_catalog.pg_attribute a  
 WHERE  
         c.oid = i.indrelid  
         and i.indisunique  
         and c.relname = '$table'  
         and a.attrelid = i.indexrelid  
 GROUP BY  
         i.indexrelid, i.indrelid, c.relname, i.indisprimary, i.indisunique  
 ORDER BY  
         cols_in_pk ASC, i.indisprimary DESC, i.indisunique DESC, c.relname DESC  
 ";  
         debug_sql($sql);  
         $sth = $mdbh->prepare($sql);  
         $sth->execute() || die;  
         $row = $sth->fetchrow_hashref();  
         if ($row) {  
                 $sql="  
                 select a1.attname as attname from pg_attribute a1, pg_attribute a2 where a1.attrelid = ".$row->{indexrelid}." and a2.attrelid=".$row->{indrelid}." and a1.attname = a2.attname and a2.attnotnull";  
                   
                 debug_sql($sql);  
                 my $sth2 = $mdbh->prepare($sql);  
                 $sth2->execute() || die;  
                 @cols_pk = ();  
                 while (my $row2 = $sth2->fetchrow_hashref()) {  
                         push @cols_pk,$row2->{attname};  
                         $in_pk{$row2->{attname}}++;  
                 }  
                   
         }  
167          if (! @cols_pk) {          if (! @cols_pk) {
168                  print STDERR "can't find PK rows for table '$table' using all\n";                  print STDERR "can't find PK rows for table '$table' using all\n";
169                  @cols_pk = @cols;                  @cols_pk = @cols;
170          }          }
171    
         my @cols_cmp;   # columns to compare  
   
         foreach my $col (@cols_test) {  
                 push @cols_cmp,$col if (! $in_pk{$col});  
         }  
172    
173          if ($verbose) {          if ($verbose) {
174                  print "table '$table' using for key: (",join(", ",@cols_pk),") to compare cols: (",join(", ",@cols_cmp),")\n";                  print "table '$table' using for key: (",join(", ",@cols_pk),") to compare cols: (",join(", ",@cols_cmp),")\n";
# Line 450  ORDER BY Line 358  ORDER BY
358          $diff_total += $diff_row;          $diff_total += $diff_row;
359  }  }
360    
361  print STDERR "$diff_total differences in all tables\n" if ($verbose && $diff_total > 0);  if ($verbose) {
362            if ($diff_total == 0) {
363                    print STDERR "databases are same";
364            } elsif ($diff_total > 0) {
365                    print STDERR "$diff_total differences in all tables\n";
366            } else {
367                    die "this shouldn't happend. please report a bug!";
368            }
369    }
370    
371  $mdbh->disconnect();  $mdbh->disconnect();
372  $sdbh->disconnect();  $sdbh->disconnect();
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