How to use

unparseSqlIntervalQualifier

method

in

org.apache.calcite.sql.SqlDialect

public void unparse(
  SqlWriter writer,
  int leftPrec,
  int rightPrec) {
 writer.getDialect()
   .unparseSqlIntervalQualifier(writer, this, RelDataTypeSystem.DEFAULT);
}

public void unparse(
  SqlWriter writer,
  int leftPrec,
  int rightPrec) {
 writer.getDialect()
   .unparseSqlIntervalQualifier(writer, this, RelDataTypeSystem.DEFAULT);
}

/** Converts an interval literal to a SQL string. The default implementation
 * returns strings such as
 * <code>INTERVAL '1 2:3:4' DAY(4) TO SECOND(4)</code>. */
public void unparseSqlIntervalLiteral(SqlWriter writer,
  SqlIntervalLiteral literal, int leftPrec, int rightPrec) {
 SqlIntervalLiteral.IntervalValue interval =
   (SqlIntervalLiteral.IntervalValue) literal.getValue();
 writer.keyword("INTERVAL");
 if (interval.getSign() == -1) {
  writer.print("-");
 }
 writer.literal("'" + literal.getValue().toString() + "'");
 unparseSqlIntervalQualifier(writer, interval.getIntervalQualifier(),
   RelDataTypeSystem.DEFAULT);
}

/** Converts an interval literal to a SQL string. The default implementation
 * returns strings such as
 * <code>INTERVAL '1 2:3:4' DAY(4) TO SECOND(4)</code>. */
public void unparseSqlIntervalLiteral(SqlWriter writer,
  SqlIntervalLiteral literal, int leftPrec, int rightPrec) {
 SqlIntervalLiteral.IntervalValue interval =
   (SqlIntervalLiteral.IntervalValue) literal.getValue();
 writer.keyword("INTERVAL");
 if (interval.getSign() == -1) {
  writer.print("-");
 }
 writer.literal("'" + literal.getValue().toString() + "'");
 unparseSqlIntervalQualifier(writer, interval.getIntervalQualifier(),
   RelDataTypeSystem.DEFAULT);
}