Dongming Liu created CALCITE-1478:
-------------------------------------
Summary: SqlDatetimeSubtractionOperator unparse error.
Key: CALCITE-1478
URL: https://issues.apache.org/jira/browse/CALCITE-1478
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.11.0
Reporter: Dongming Liu
Assignee: Julian Hyde
The expression _date '1998-12-01' - interval '108' day(3)_ parse to SqlNode its
operator is *SqlMonotonicBinaryOperator*, when convert it to RelNode, its
operator is *SqlDatetimeSubtractionOperator*. When I use *RelToSqlConverter* to
convert the RelNode to SqlNode, its operator is also
*SqlDatetimeSubtractionOperator*. Now,
*sqlNode.toSqlString(sqlDialect).getSql()* has a *IndexOutOfBoundsException*.
The source code as follows:
{code}
final SqlWriter.Frame frame = writer.startList("(", ")");
call.operand(0).unparse(writer, leftPrec, rightPrec);
writer.sep("-");
call.operand(1).unparse(writer, leftPrec, rightPrec);
writer.endList(frame);
call.operand(2).unparse(writer, leftPrec, rightPrec);
{code}
*SqlDatetimeSubtractionOperator* must have three operands, now it only has two
operands.
The following code convert SqlMonotonicBinaryOperator to
SqlDatetimeSubtractionOperator,
{code}
registerOp(SqlStdOperatorTable.MINUS,
new SqlRexConvertlet() {
public RexNode convertCall(SqlRexContext cx, SqlCall call) {
final RexCall e =
(RexCall) StandardConvertletTable.this.convertCall(cx, call,
call.getOperator());
switch (e.getOperands().get(0).getType().getSqlTypeName()) {
case DATE:
case TIME:
case TIMESTAMP:
return convertDatetimeMinus(cx, SqlStdOperatorTable.MINUS_DATE,
call);
default:
return e;
}
}
});
{code}
For _date '1998-12-01' - interval '108' day(3)_, this converter is OK? It only
has two operands.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
