Wei.Zhou created CALCITE-6977:
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Summary: A SqlDelete that it is created by SqlDelete.Operator
need to support unparse
Key: CALCITE-6977
URL: https://issues.apache.org/jira/browse/CALCITE-6977
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.39.0
Reporter: Wei.Zhou
When i use SqlDelete.Operator to created a SqlDelete , then try to call
toString method unparse to string, it will throw a exception like below:
java.lang.UnsupportedOperationException: class
org.apache.calcite.sql.SqlSyntax$7:
SPECIALjava.lang.UnsupportedOperationException: class
org.apache.calcite.sql.SqlSyntax$7: SPECIAL
at org.apache.calcite.util.Util.needToImplement(Util.java:1080) at
org.apache.calcite.sql.SqlSyntax$7.unparse(SqlSyntax.java:128) at
org.apache.calcite.sql.SqlOperator.unparse(SqlOperator.java:377) at
org.apache.calcite.sql.SqlDialect.unparseCall(SqlDialect.java:453) at
org.apache.calcite.sql.SqlCall.unparse(SqlCall.java:103) at
org.apache.calcite.sql.SqlNode.toSqlString(SqlNode.java:155)
This exception can be reproduced as below:
// code placeholder
@Test void testSqlDeleteSqlBasicCallToString() throws Exception {
final String sql = "delete from employees where id = 1 ";
final SqlNode sqlNode = parseSql(sql);
final SqlDelete sqlDelete = (SqlDelete) sqlNode;
final SqlCall call =
SqlDelete.OPERATOR.createCall((sqlDelete).getFunctionQuantifier(),
sqlDelete.getParserPosition(), sqlDelete.getOperandList());
System.out.println(call.toString());
}
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