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From "Rick Hillegas (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1231) LIKE does not match empty strings when used with a prepared statement
Date Tue, 19 Sep 2006 14:59:26 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1231?page=all ]

Rick Hillegas updated DERBY-1231:
---------------------------------

    Fix Version/s: 10.2.2.0
                       (was: 10.2.1.0)

Moving to 10.2.2.0.

> LIKE does not match empty strings when used with a prepared statement
> ---------------------------------------------------------------------
>
>                 Key: DERBY-1231
>                 URL: http://issues.apache.org/jira/browse/DERBY-1231
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC, SQL
>    Affects Versions: 10.2.1.0, 10.1.2.0, 10.1.3.0, 10.3.0.0
>            Reporter: Dyre Tjeldvoll
>             Fix For: 10.2.2.0
>
>         Attachments: vti.java
>
>
> LIKE should give true for two 0-length strings. See SQL 2003 Ch. 8.5
> General Rules 3)c)i)
> The query SELECT * FROM t WHERE v like ''
> appears to give me all rows where v is an empty
> string, as expected.
> But a prepared statement
> SELECT * FROM t WHERE v like ?, with setString(1, "")
> always returns an empty result set. See attached repro for the full example.

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