jdbc-protolib/src/main/java/com/streamsets/pipeline/lib/jdbc/parser/sql/SQLListener.java
public void reset(){
    columns.clear();
    this.columnsExpected = null;
    columnNames = null;
    table = null;
    schema = null;
    insideStatement = false;
  }
public void reset(){
    columns.clear();
    this.columnsExpected = null;
    columnNames = null;
    table = null;
    schema = null;
    insideStatement = false;
  }
Reset the listener to use with the next statement. All column information is cleared.