feat:修改nl2sql功能

nl2sql/semantics.py

@@ -107,18 +107,26 @@ def resolve_semantics(question: str, *, catalog: dict[str, Any] | None = None) -
         {
             "term": item["term"],
             "field": item["fields"][0],
-            "hint": item.get("metric_hint") or item.get("value_hint", ""),
+            "hint": item["metric_hint"],
         }
-        # metric_hint（指标口径）与 value_hint（字段取值口径）都要进入
-        # SQL 生成上下文；只过滤 metric_hint 会让枚举值提示永远丢失。
         for item in matched
-        if "metric_hint" in item or "value_hint" in item
+        if item.get("metric_hint")
+    ]
+    value_hints = [
+        {
+            "term": item["term"],
+            "field": item["fields"][0],
+            "hint": item["value_hint"],
+        }
+        for item in matched
+        if item.get("value_hint")
     ]
     return {
         "terms": [item["term"] for item in matched],
         "tables": tables,
         "fields": fields,
         "metrics": metrics,
+        "value_hints": value_hints,
         "relationships": list(catalog.get("relationships", [])),
     }
 
@@ -149,6 +157,11 @@ def build_semantic_context(question: str, schema: dict[str, Any]) -> dict[str, A
         for metric in resolved["metrics"]
         if any(metric["field"] == field for _, field in schema_fields if _ in tables)
     ]
+    value_hints = [
+        hint
+        for hint in resolved["value_hints"]
+        if any(hint["field"] == field for _, field in schema_fields if _ in tables)
+    ]
     relationships = [
         relation
         for relation in resolved["relationships"]
@@ -160,5 +173,6 @@ def build_semantic_context(question: str, schema: dict[str, Any]) -> dict[str, A
         "tables": tables,
         "fields": fields,
         "metrics": metrics,
+        "value_hints": value_hints,
         "relationships": relationships,
     }