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Changes per Daniel's review: Preserve the column names in table order

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This commit is contained in:
Brian Fraser
2012-11-06 12:05:31 -03:00
parent e778a0900c
commit ab9bfa2667
1 changed files with 19 additions and 13 deletions
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32
bin/pt-online-schema-change
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@@ -7836,11 +7836,13 @@ sub main {
my $col_posn = $orig_tbl->{tbl_struct}->{col_posn};
my $orig_cols = $orig_tbl->{tbl_struct}->{is_col};
my $new_cols = $new_tbl->{tbl_struct}->{is_col};
my @common_cols = sort { $col_posn->{$a} <=> $col_posn->{$b} }
grep { $new_cols->{$_} }
@renamed_cols{keys %$new_cols} = keys %$new_cols;
my @sorted_cols = sort { $col_posn->{$a} <=> $col_posn->{$b} }
keys %$orig_cols;
@renamed_cols{@common_cols} = @common_cols;
PTDEBUG && _d('Common columns', @common_cols);
my @old_cols = grep { $renamed_cols{$_} } @sorted_cols;
my @new_cols = map { $renamed_cols{$_} ? $renamed_cols{$_} : () }
@sorted_cols;
PTDEBUG && _d('New columns', @new_cols);
# ########################################################################
# Step 3: Create the triggers to capture changes on the original table and
@@ -7871,7 +7873,7 @@ sub main {
create_triggers(
orig_tbl => $orig_tbl,
new_tbl => $new_tbl,
columns => \%renamed_cols,
columns => { old_columns => \@old_cols, new_columns => \@new_cols },
Cxn => $cxn,
Quoter => $q,
OptionParser => $o,
@@ -8144,9 +8146,9 @@ sub main {
# NibbleIterator combines these two statements and adds
# "FROM $orig_table->{name} WHERE <nibble stuff>".
my $dml = "INSERT LOW_PRIORITY IGNORE INTO $new_tbl->{name} "
. "(" . join(', ', map { $q->quote($_) } values %renamed_cols) . ") "
. "(" . join(', ', map { $q->quote($_) } @new_cols) . ") "
. "SELECT";
my $select = join(', ', map { $q->quote($_) } keys %renamed_cols);
my $select = join(', ', map { $q->quote($_) } @old_cols);
# The chunk size is auto-adjusted, so use --chunk-size as
# the initial value, but then save and update the adjusted
@@ -8942,6 +8944,13 @@ sub create_triggers {
$prefix = $truncated_prefix;
}
# new_columns and old_columns are probably the same, unless the
# user is doing a CHANGE COLUMN col col_different_name
my %renamed_cols;
my @new_cols = @{$cols->{new_columns}};
my @old_cols = @{$cols->{old_columns}};
@renamed_cols{@new_cols} = @old_cols;
# To be safe, the delete trigger must specify all the columns of the
# primary key/unique index. We use null-safe equals, because unique
# unique indexes can be nullable.
@@ -8950,7 +8959,7 @@ sub create_triggers {
my $del_index_cols = join(" AND ",
map {
my $col = $q->quote($_);
"$new_tbl->{name}.$col <=> OLD.$cols->{$_}"
"$new_tbl->{name}.$col <=> OLD.$renamed_cols{$_}"
} @{$tbl_struct->{keys}->{$del_index}->{cols}} );
my $delete_trigger
= "CREATE TRIGGER `${prefix}_del` AFTER DELETE ON $orig_tbl->{name} "
@@ -8958,11 +8967,8 @@ sub create_triggers {
. "DELETE IGNORE FROM $new_tbl->{name} "
. "WHERE $del_index_cols";
# values %$cols has the new names, keys has the old ones. These
# are probably the same, unless the user is doing a
# CHANGE COLUMN col col_different_name
my $qcols = join(', ', map { $q->quote($_) } values %$cols);
my $new_vals = join(', ', map { "NEW.".$q->quote($_) } keys %$cols);
my $qcols = join(', ', map { $q->quote($_) } @new_cols);
my $new_vals = join(', ', map { "NEW.".$q->quote($_) } @old_cols);
my $insert_trigger
= "CREATE TRIGGER `${prefix}_ins` AFTER INSERT ON $orig_tbl->{name} "
. "FOR EACH ROW "