Please help me find out why the regex below does not match the full table name

I have a file with sql queries. I am trying to extract table names from the file.

sample of data in the file

update users set timezone='Europe/London' where uid not in (0);
update field_data_field_location set field_location_value = NULL where
+ field_location_value='select';
update field_revision_field_location set field_location_value = NULL w
+here field_location_value='select';
update field_data_field_profession set field_profession_value = NULL w
+here field_profession_value = 'select';
update field_revision_field_profession set field_profession_value = NU
+LL where field_profession_value = 'select';
[download]

The following code does not match the last character of the table name

while(<FILE>){
  $line = $_;
  if ($line =~ m/^update\ (\w*)[^\s]/){
    print $1."\n";
  }
}
[download]

output

user
field_data_field_locatio
field_revision_field_locatio
field_data_field_professio
field_revision_field_professio
[download]

working regex

while(<FILE>){
  $line = $_;
  if ($line =~ m/^update\ (\w*)\ [^\s]/){
    print $1."\n";
  }
}
[download]

correct output

users
field_data_field_location
field_revision_field_location
field_data_field_profession
field_revision_field_profession
[download]

I cannot understand why the first regex does not work. Thanks for your help.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.