yuqi1129 edited a comment on pull request #902:
URL: https://github.com/apache/incubator-iotdb/pull/902#issuecomment-691814857
@Test
```
public void testFilter7() {
CalciteAssert.that()
.with(MODEL)
.with("UnQuotedCasing", IoTDBConstant.UnQuotedCasing)
.query("select * from \"root.vehicle\" " +
"where (device = 'root.vehicle.d0' AND \"time\" <= 1) OR s2 =
2.22 and 1 = 1")
.returns("time=1; device=root.vehicle.d0; s0=101; s1=1101; s2=null;
s3=null; s4=null\n" +
"time=2; device=root.vehicle.d0; s0=10000; s1=40000; s2=2.22;
s3=null; s4=null\n" +
"time=2222; device=root.vehicle.d1; s0=null; s1=null; s2=2.22;
s3=null; s4=null\n")
.explainContains("PLAN=IoTDBToEnumerableConverter\n" +
" IoTDBFilter(condition=[OR(AND(=($1, 'root.vehicle.d0'),
<=($0, 1)), =(CAST($4):DOUBLE NOT NULL, 2.22))])\n" +
" IoTDBTableScan(table=[[IoTDBSchema, root.vehicle]])");
}
```
Should add rules to reduce constant value
like where 1 = 1 and a = 1 should be folded as where a = 1, see above
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