@Override protected void func(BytesColumnVector outV, TimestampColumnVector inV, int i) {
    super.sqlFormat(outV, inV, i, sqlFormatter);
  }
Vectorized UDF for CAST (&lt;TIMESTAMP&gt; TO CHAR(&lt;LENGTH&gt;) WITH FORMAT &lt;STRING&gt;).
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/CastTimestampToCharWithFormat.java