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Posted to derby-commits@db.apache.org by ch...@apache.org on 2012/04/13 15:13:06 UTC
svn commit: r1325753 - in /db/derby/docs/trunk/src/ref: rrefsqlj23075.dita
rreftablesubquery.dita
Author: chaase3
Date: Fri Apr 13 13:13:06 2012
New Revision: 1325753
URL: http://svn.apache.org/viewvc?rev=1325753&view=rev
Log:
DERBY-5506 Document that EXISTS subquery can now select more then one column
Modified 2 Reference Manual topics.
Patch: DERBY-5506.diff
Modified:
db/derby/docs/trunk/src/ref/rrefsqlj23075.dita
db/derby/docs/trunk/src/ref/rreftablesubquery.dita
Modified: db/derby/docs/trunk/src/ref/rrefsqlj23075.dita
URL: http://svn.apache.org/viewvc/db/derby/docs/trunk/src/ref/rrefsqlj23075.dita?rev=1325753&r1=1325752&r2=1325753&view=diff
==============================================================================
--- db/derby/docs/trunk/src/ref/rrefsqlj23075.dita (original)
+++ db/derby/docs/trunk/src/ref/rrefsqlj23075.dita Fri Apr 13 13:13:06 2012
@@ -152,9 +152,8 @@ HotelBookings WHERE rooms_available = 0)
<row>
<entry colname="1">EXISTS</entry>
<entry colname="2">Operates on a table subquery. Returns TRUE if the table
-subquery returns any rows, and FALSE if it returns no rows. Table subquery
-can return multiple columns (only if you use * to denote multiple columns)
-and rows. <codeblock><b>WHERE EXISTS
+subquery returns any rows, and FALSE if it returns no rows. A table subquery
+can return multiple columns and rows. <codeblock><b>WHERE EXISTS
(SELECT *
FROM Flights
WHERE dest_airport = 'SFO'
Modified: db/derby/docs/trunk/src/ref/rreftablesubquery.dita
URL: http://svn.apache.org/viewvc/db/derby/docs/trunk/src/ref/rreftablesubquery.dita?rev=1325753&r1=1325752&r2=1325753&view=diff
==============================================================================
--- db/derby/docs/trunk/src/ref/rreftablesubquery.dita (original)
+++ db/derby/docs/trunk/src/ref/rreftablesubquery.dita Fri Apr 13 13:13:06 2012
@@ -33,9 +33,10 @@ multiple rows.</p>
a <xref href="rrefsqlj21583.dita#rrefsqlj21583">FROM clause</xref></li>
<li>with EXISTS, IN, or quantified comparisons.</li>
</ul></p>
-<p>When used as a <i><xref href="rreftableexpression.dita#rreftableexpression">TableExpression</xref></i> in a <xref href="rrefsqlj21583.dita#rrefsqlj21583">FROM clause</xref>, it can return
-multiple columns. When used with EXISTS, it returns multiple columns only
-if you use * to return the multiple columns.</p>
+<p>When used as a
+<i><xref href="rreftableexpression.dita#rreftableexpression">TableExpression</xref></i>
+in a <xref href="rrefsqlj21583.dita#rrefsqlj21583">FROM clause</xref>, or with
+EXISTS, it can return multiple columns. </p>
<p>When used with IN or quantified
comparisons, it must return a single column.</p></section>
<refsyn><title>Syntax</title>