LIKE does not match empty strings when used with a prepared statement
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Key: DERBY-1231
URL: http://issues.apache.org/jira/browse/DERBY-1231
Project: Derby
Type: Bug
Components: JDBC, SQL
Versions: 10.2.0.0, 10.1.2.0, 10.1.3.0, 10.3.0.0
Reporter: Dyre Tjeldvoll
Fix For: 10.2.0.0
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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