Method unparse

core/src/main/java/org/apache/calcite/sql/SqlCall.java:130–142

(
      SqlWriter writer,
      int leftPrec,
      int rightPrec)

  }

  @Override public void unparse(
      SqlWriter writer,
      int leftPrec,
      int rightPrec) {
    final SqlDialect dialect = writer.getDialect();
    if (needsParentheses(writer, leftPrec, rightPrec)) {
      final SqlWriter.Frame frame = writer.startList("(", ")");
      dialect.unparseCall(writer, this, 0, 0);
      writer.endList(frame);
    } else {
      dialect.unparseCall(writer, this, leftPrec, rightPrec);
    }
  }

  /**
   * Validates this call.