feat(dataflow): model production SQL flow patterns

src/govoplan_dataflow/backend/node_library.py

@@ -117,6 +117,8 @@ _NODE_TYPES = (
                     ("left", "All left rows"),
                     ("right", "All right rows"),
                     ("full", "All rows"),
+                    ("semi", "Left rows with a match"),
+                    ("anti", "Left rows without a match"),
                 ),
             ),
             NodeConfigField(id="left_keys", label="Left keys", kind="column_list", required=True),
@@ -289,6 +291,35 @@ _NODE_TYPES = (
         },
         sql_support="partial",
     ),
+    NodeTypeDefinition(
+        type="calculate",
+        category="transform",
+        label="Calculate columns",
+        description=(
+            "Create or replace several columns using ordered safe typed "
+            "expressions."
+        ),
+        icon="calculator",
+        input_ports=(NodePortDefinition(id="input", label="Input"),),
+        config_fields=(
+            NodeConfigField(
+                id="calculations",
+                label="Calculations",
+                kind="calculations",
+                required=True,
+            ),
+        ),
+        default_config={
+            "calculations": [
+                {
+                    "target_column": "",
+                    "expression": "",
+                    "result_type": "unknown",
+                }
+            ]
+        },
+        sql_support="partial",
+    ),
     NodeTypeDefinition(
         type="convert",
         category="transform",
@@ -386,6 +417,53 @@ _NODE_TYPES = (
         config_fields=(NodeConfigField(id="fields", label="Sort fields", kind="sort_fields", required=True),),
         default_config={"fields": [{"column": "", "direction": "asc"}]},
     ),
+    NodeTypeDefinition(
+        type="window.rank",
+        category="transform",
+        label="Rank rows",
+        description=(
+            "Number or rank rows within optional partitions using a stable "
+            "ordering."
+        ),
+        icon="list-ordered",
+        input_ports=(NodePortDefinition(id="input", label="Input"),),
+        config_fields=(
+            NodeConfigField(
+                id="method",
+                label="Method",
+                kind="select",
+                options=(
+                    ("row_number", "Row number"),
+                    ("rank", "Rank with gaps"),
+                    ("dense_rank", "Dense rank"),
+                ),
+            ),
+            NodeConfigField(
+                id="target_column",
+                label="Output column",
+                kind="text",
+                required=True,
+            ),
+            NodeConfigField(
+                id="partition_by",
+                label="Partition by",
+                kind="column_list",
+            ),
+            NodeConfigField(
+                id="order_by",
+                label="Order by",
+                kind="sort_fields",
+                required=True,
+            ),
+        ),
+        default_config={
+            "method": "row_number",
+            "target_column": "row_number",
+            "partition_by": [],
+            "order_by": [{"column": "", "direction": "asc"}],
+        },
+        sql_support="partial",
+    ),
     NodeTypeDefinition(
         type="limit",
         category="transform",