Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>If I understand what you're saying (and I'm not sure I do) you want to find the quoted string within your string ignoring escaped quotes. Is that right? If so, try this:</p> <pre><code>/(?&lt;!\\)'((?:\\'|[^'])*)(?&lt;!\\)'/ </code></pre> <p>Basically:</p> <ul> <li>Start with a single quote that isn't preceded by a backslash;</li> <li>Match zero or more occurrences of: backslash then quote or any character other than a quote;</li> <li>End in a quote;</li> <li>Don't group the middle parentheses (the ?: operator); and</li> <li>The closing quote can't be preceded by a backslash.</li> </ul> <p>Ok, I've tested this in Java (sorry that's more my schtick than Python but the principle is the same):</p> <pre><code>private final static String TESTS[] = { "'testing 123'", "'testing 123\\'", "'testing 123", "blah 'testing 123", "blah 'testing 123'", "blah 'testing 123' foo", "this 'is a \\' test'", "another \\' test 'testing \\' 123' \\' blah" }; public static void main(String args[]) { Pattern p = Pattern.compile("(?&lt;!\\\\)'((?:\\\\'|[^'])*)(?&lt;!\\\\)'"); for (String test : TESTS) { Matcher m = p.matcher(test); if (m.find()) { System.out.printf("%s =&gt; %s%n", test, m.group(1)); } else { System.out.printf("%s doesn't match%n", test); } } } </code></pre> <p>results:</p> <pre><code>'testing 123' =&gt; testing 123 'testing 123\' doesn't match 'testing 123 doesn't match blah 'testing 123 doesn't match blah 'testing 123' =&gt; testing 123 blah 'testing 123' foo =&gt; testing 123 this 'is a \' test' =&gt; is a \' test another \' test 'testing \' 123' \' blah =&gt; testing \' 123 </code></pre> <p>which seems correct.</p>
    singulars
    1. This table or related slice is empty.
    1. PORegex for managing escaped characters for items like string literals
      singulars
      1. PTQuestion
    1. PTAnswer
    1. UScletus
    1. UScletus
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI found something close, except I forgot to check against the escaped initial quote... I don't know (?>! though. Did you meant (?<! or is it some construct I don't know?
      singulars
      1. PO
      1. USPhiLho
    2. COI did, type corrected.
      singulars
      1. PO
      1. UScletus
    3. CONot bad, but it fails in cases where the first quote is preceded by an escaped backslash.
      singulars
      1. PO
      1. USEvan Fosmark
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload