Make supported types in dialect yaml files as a map (#81)

* Make supported types in dialect yaml files as a map

* Make supported types as map[sting]struct

* Set supported_as_column to false for snowflake interval

* Address review comments

* use lower case for local types

bft/dialects/types.py

@@ -83,7 +83,7 @@ class DialectFile(NamedTuple):
     scalar_functions: List[DialectFunction]
     aggregate_functions: List[DialectFunction]
     uri_to_func_prefix: Dict[str, str]
-    supported_types: List[str]
+    supported_types: Dict[str, Dict]
 
 
 class SqlMapping(NamedTuple):

dialects/cudf.yaml

@@ -26,16 +26,26 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - i8
-  - i16
-  - i32
-  - i64
-  - fp32
-  - fp64
-  - bool
-  - str
-  - ts
-  - date
+  i8:
+    df_type_name: int8
+  i16:
+    df_type_name: int16
+  i32:
+    df_type_name: int32
+  i64:
+    df_type_name: int64
+  fp32:
+    df_type_name: float32
+  fp64:
+    df_type_name: float64
+  bool:
+    df_type_name: bool
+  str:
+    df_type_name: string
+  ts:
+    df_type_name: datetime64[s]
+  date:
+    df_type_name: datetime64[s]
 scalar_functions:
 - name: arithmetic.add
   local_name: add

dialects/datafusion.yaml

@@ -26,19 +26,30 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - i8
-  - i16
-  - i32
-  - i64
-  - fp32
-  - fp64
-  - bool
-  - str
-  - date
-  - time
-  - ts
-  - tstz
-  - interval
+  i8:
+    sql_type_name: int8
+  i16:
+    sql_type_name: int16
+  i32:
+    sql_type_name: int32
+  i64:
+    sql_type_name: int64
+  fp32:
+    sql_type_name: float32
+  fp64:
+    sql_type_name: float64
+  bool:
+    sql_type_name: bool_
+  str:
+    sql_type_name: string
+  date:
+    sql_type_name: timestamp
+  time:
+    sql_type_name: timestamp
+  ts:
+    sql_type_name: timestamp
+  tstz:
+    sql_type_name: timestamp
 scalar_functions:
 - name: arithmetic.add
   local_name: +

dialects/duckdb.yaml

@@ -26,20 +26,34 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - i8
-  - i16
-  - i32
-  - i64
-  - fp32
-  - fp64
-  - bool
-  - str
-  - date
-  - time
-  - ts
-  - tstz
-  - interval
-  - dec
+  i8:
+    sql_type_name: tinyint
+  i16:
+    sql_type_name: smallint
+  i32:
+    sql_type_name: integer
+  i64:
+    sql_type_name: bigint
+  fp32:
+    sql_type_name: real
+  fp64:
+    sql_type_name: double
+  bool:
+    sql_type_name: boolean
+  str:
+    sql_type_name: varchar
+  date:
+    sql_type_name: date
+  time:
+    sql_type_name: time
+  ts:
+    sql_type_name: timestamp
+  tstz:
+    sql_type_name: timestamptz
+  interval:
+    sql_type_name: interval
+  decimal:
+    sql_type_name: decimal
 scalar_functions:
 - name: arithmetic.add
   local_name: +

dialects/postgres.yaml

@@ -26,18 +26,30 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - i16
-  - i32
-  - i64
-  - fp32
-  - fp64
-  - bool
-  - str
-  - date
-  - time
-  - ts
-  - tstz
-  - interval
+  i16:
+    sql_type_name: smallint
+  i32:
+    sql_type_name: integer
+  i64:
+    sql_type_name: bigint
+  fp32:
+    sql_type_name: float4
+  fp64:
+    sql_type_name: float8
+  bool:
+    sql_type_name: boolean
+  str:
+    sql_type_name: text
+  date:
+    sql_type_name: date
+  time:
+    sql_type_name: time
+  ts:
+    sql_type_name: timestamp
+  tstz:
+    sql_type_name: timestamptz
+  interval:
+    sql_type_name: interval
 scalar_functions:
 - name: arithmetic.add
   local_name: +

dialects/snowflake.yaml

@@ -26,15 +26,25 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - fp64
-  - bool
-  - str
-  - date
-  - time
-  - ts
-  - tsz
-  - interval
-  - dec
+  fp64:
+    sql_type_name: float
+  bool:
+    sql_type_name: boolean
+  str:
+    sql_type_name: varchar
+  date:
+    sql_type_name: date
+  time:
+    sql_type_name: time
+  ts:
+    sql_type_name: timestamp
+  tstz:
+    sql_type_name: timestamptz
+  interval:
+    sql_type_name: interval
+    supported_as_column: false
+  dec:
+    sql_type_name: numeric
 scalar_functions:
 - name: arithmetic.add
   local_name: +

dialects/sqlite.yaml

@@ -26,14 +26,22 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - i8
-  - i16
-  - i32
-  - i64
-  - fp32
-  - fp64
-  - bool
-  - str
+  i8:
+    sql_type_name: tinyint
+  i16:
+    sql_type_name: smallint
+  i32:
+    sql_type_name: int
+  i64:
+    sql_type_name: hugeint
+  fp32:
+    sql_type_name: real
+  fp64:
+    sql_type_name: real
+  bool:
+    sql_type_name: boolean
+  str:
+    sql_type_name: text
 scalar_functions:
 - name: arithmetic.add
   local_name: +

dialects/velox_presto.yaml

@@ -26,10 +26,14 @@ dependencies:
   string: 
     https://github.com/substrait-io/substrait/blob/main/extensions/substrait/extensions/functions_string.yaml
 supported_types:
-  - i64
-  - fp64
-  - bool
-  - str
+  i64:
+    sql_type_name: i64
+  fp64:
+    sql_type_name: fp64
+  bool:
+    sql_type_name: boolean
+  str:
+    sql_type_name: string
 scalar_functions:
 - name: arithmetic.add
   local_name: +