fix: Enable explore button on SQL Lab view when connected to Apache P…

…inot as a database (apache#28364)

docs/docs/configuration/databases.mdx

@@ -1035,6 +1035,11 @@ The expected connection string using username and password is formatted as follo
 pinot://<username>:<password>@<pinot-broker-host>:<pinot-broker-port>/query/sql?controller=http://<pinot-controller-host>:<pinot-controller-port>/verify_ssl=true``
 ```
 
+If you want to use explore view or joins, window functions, etc. then enable [multi-stage query engine](https://docs.pinot.apache.org/reference/multi-stage-engine).
+Add below argument while creating database connection in Advanced -> Other -> ENGINE PARAMETERS
+```
+{"connect_args":{"use_multistage_engine":"true"}}
+```
 
 #### Postgres
 

pyproject.toml

@@ -151,7 +151,7 @@ ocient = [
     "geojson",
 ]
 oracle = ["cx-Oracle>8.0.0, <8.1"]
-pinot = ["pinotdb>=0.3.3, <0.4"]
+pinot = ["pinotdb>=5.0.0, <6.0.0"]
 playwright = ["playwright>=1.37.0, <2"]
 postgres = ["psycopg2-binary==2.9.6"]
 presto = ["pyhive[presto]>=0.6.5"]

superset/db_engine_specs/pinot.py

@@ -25,10 +25,6 @@
 class PinotEngineSpec(BaseEngineSpec):
     engine = "pinot"
     engine_name = "Apache Pinot"
-    allows_subqueries = False
-    allows_joins = False
-    allows_alias_in_select = False
-    allows_alias_in_orderby = False
 
     # https://docs.pinot.apache.org/users/user-guide-query/supported-transformations#datetime-functions
     _time_grain_expressions = {