HappenLee opened a new issue #4625:
URL: https://github.com/apache/incubator-doris/issues/4625
**Describe the bug**
There is a oracle external table in Doris
```
CREATE EXTERNAL TABLE `test_oracle` (
`date` datetime NULL COMMENT "",
) ENGINE=ODBC
COMMENT "ODBC"
PROPERTIES (
"host" = "192.168.0.1",
"port" = "8086",
"user" = "test",
"password" = "",
"database" = "test",
"table" = "test",
"driver" = "Oracle 19 ODBC driver",
"type" = "oracle"
);
```
some query like this
```
select * from test_oracle where DATE_FORMAT(date) = "201908"
```
will cause query failed, Because oracle do not support function of
`DATE_FORMAT`.
So now doris should not push down prediction of function.
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