Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Try:</p> <pre><code>public class Main { public static void main(String[] args) { String line = "foo,bar,c;qual=\"baz,blurb\",d;junk=\"quux,syzygy\""; String[] tokens = line.split(",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)", -1); for(String t : tokens) { System.out.println("&gt; "+t); } } } </code></pre> <p>Output:</p> <pre><code>&gt; foo &gt; bar &gt; c;qual="baz,blurb" &gt; d;junk="quux,syzygy" </code></pre> <p>In other words: <em>split on the comma only if that comma has zero, or an even number of quotes ahead of it</em>.</p> <p>Or, a bit friendlier for the eyes:</p> <pre><code>public class Main { public static void main(String[] args) { String line = "foo,bar,c;qual=\"baz,blurb\",d;junk=\"quux,syzygy\""; String otherThanQuote = " [^\"] "; String quotedString = String.format(" \" %s* \" ", otherThanQuote); String regex = String.format("(?x) "+ // enable comments, ignore white spaces ", "+ // match a comma "(?= "+ // start positive look ahead " (?: "+ // start non-capturing group 1 " %s* "+ // match 'otherThanQuote' zero or more times " %s "+ // match 'quotedString' " )* "+ // end group 1 and repeat it zero or more times " %s* "+ // match 'otherThanQuote' " $ "+ // match the end of the string ") ", // stop positive look ahead otherThanQuote, quotedString, otherThanQuote); String[] tokens = line.split(regex, -1); for(String t : tokens) { System.out.println("&gt; "+t); } } } </code></pre> <p>which produces the same as the first example.</p> <h2>EDIT</h2> <p>As mentioned by @MikeFHay in the comments:</p> <blockquote> <p>I prefer using <a href="http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/base/Splitter.html" rel="noreferrer">Guava's Splitter</a>, as it has saner defaults (see discussion above about empty matches being trimmed by <code>String#split()</code>, so I did: </p> <pre><code>Splitter.on(Pattern.compile(",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)")) </code></pre> </blockquote>
    singulars
    1. This table or related slice is empty.
    1. POJava: splitting a comma-separated string but ignoring commas in quotes
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USUrban Vagabond
    1. USBart Kiers
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POJava: splitting a comma-separated string but ignoring commas in quotes
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COAccording to RFC 4180: Sec 2.6: "Fields containing line breaks (CRLF), double quotes, and commas should be enclosed in double-quotes." Sec 2.7: "If double-quotes are used to enclose fields, then a double-quote appearing inside a field must be escaped by preceding it with another double quote" So, if `String line = "equals: =,\"quote: \"\"\",\"comma: ,\""`, all you need to do is strip off the extraneous double quote characters.
      singulars
      1. PO
      1. USPaul Hanbury
    2. CO@Bart: my point being that your solution still works, even with embedded quotes
      singulars
      1. PO
      1. USPaul Hanbury
    3. COsolution still works for RFC 4180-format CSVs, that is.
      singulars
      1. PO
      1. USJason S
 

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