kekwan opened a new issue #13009:
URL: https://github.com/apache/superset/issues/13009
When previewing a table in SQL Lab, a SELECT * statement is generated based
on table data and table metadata if it contains partitions. When generating the
SELECT * statement on a table with partitions, the table data, 'TIMESTAMP' in
my case is not casted in the WHERE block.
### Expected results
Previewing tables with data partitions should work. The WHERE block of the
generated SELECT * statement should talk into account casting of data types,
particularly TIMESTAMP.
### Actual results
`select_star` method calls `where_latest_partition` to generate WHERE block
when partition exists. `where_latest_partition` is failing to CAST data types
needed for WHERE block causing syntax error when it runs the select * statement.
SQL Statement generated by `get_table_metadata` calling `select_star`.
Columns `datetimepartition` and `etl_ts` should be casted to TIMESTAMP, not
VARCHAR.
```
SELECT "event_type" AS "event_type",
"trace_id" AS "trace_id",
"tenant" AS "tenant",
"core_tenant" AS "core_tenant",
"event_timestamp" AS "event_timestamp",
"table_id" AS "table_id",
"dtr_workspace_id" AS "dtr_workspace_id",
"connectors" AS "connectors",
"table_type" AS "table_type",
"row_count" AS "row_count",
"field_count" AS "field_count",
"partition_count" AS "partition_count",
"data_size_bytes" AS "data_size_bytes",
"datetimepartition" AS "datetimepartition",
"etl_ts" AS "etl_ts",
"insert_try_number" AS "insert_try_number"
FROM "events"."data_tables"
WHERE "datetimepartition" = '2021-02-08 16:00:00.000'
AND "etl_ts" = '2021-02-08 16:30:00.000'
AND "insert_try_number" = 1
LIMIT 100
```
Syntax error from Presto due to the incorrect SQL statement
`Presto error: Cannot apply operator: timestamp(3) = varchar(23)`
#### Screenshots
#### How to reproduce the bug
1. Go to SQL Lab
2. Preview Trino/Presto table with partitions and TIMESTAMP as a partition
column.
### Environment
- superset version: `0.37.2`
- python version: `python 3.6`
### Checklist
Make sure to follow these steps before submitting your issue - thank you!
- [x] I have checked the superset logs for python stacktraces and included
it here as text if there are any.
- [x] I have reproduced the issue with at least the latest released version
of superset.
- [x] I have checked the issue tracker for the same issue and I haven't
found one similar.
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