袁聪的第二次提交，项目已完整

tools/generate_baseline_sql.py

@@ -9,6 +9,14 @@ SOURCE = ROOT / "docs" / "00-新数据库基线设计.md"
 SPECIAL_SOURCE = ROOT / "docs" / "02-数据库建表设计.md"
 OUTPUT = ROOT / "alembic" / "baseline_generated.sql"
 
+# 文档以两种写法声明唯一约束：
+#   1) 显式联合键：| product_id | ... | 唯一键 `(product_id, trade_date)` |
+#   2) 联合标记：  | customer_id | ... | 联合唯一键、索引 |（同表内多字段共同构成一个键）
+# 单列唯一键只在规则列出现"唯一"且未参与上述两种写法时生成。
+COMBINED_KEY_RE = re.compile(r"唯一键[^()]*\(([^)]+)\)")
+COMBINED_FLAG = "联合唯一键"
+MAX_INDEX_NAME = 64
+
 TYPE_MAP = {"BIGINT UNSIGNED": "BIGINT UNSIGNED", "INT": "INT", "FLOAT": "FLOAT",
             "TINYINT(1)": "TINYINT(1)", "JSON": "JSON", "DATE": "DATE", "DATETIME": "DATETIME",
             "TEXT": "TEXT", "MEDIUMTEXT": "MEDIUMTEXT"}
@@ -61,7 +69,9 @@ def parse_detailed_tables(text: str) -> list[str]:
         if not fields:
             continue
         columns = []
-        uniques = []
+        combined_keys: list[tuple[str, ...]] = []
+        combined_flags: list[str] = []
+        single_uniques: list[str] = []
         indexes = []
         for field, typ, rule in fields:
             col = f"`{field}` {typ}"
@@ -69,8 +79,21 @@ def parse_detailed_tables(text: str) -> list[str]:
             if "CURRENT_TIMESTAMP" in rule and "DATETIME" in typ:
                 cs.append("DEFAULT CURRENT_TIMESTAMP")
             columns.append(col + (" " + " ".join(cs) if cs else " NULL"))
-            if "唯一" in rule:
-                uniques.append(field)
+            matched_key = False
+            for raw in COMBINED_KEY_RE.findall(rule):
+                key_columns = tuple(
+                    dict.fromkeys(c.strip().strip("`") for c in raw.split(",") if c.strip())
+                )
+                if len(key_columns) > 1:
+                    if key_columns not in combined_keys:
+                        combined_keys.append(key_columns)
+                elif key_columns:
+                    single_uniques.append(key_columns[0])
+                matched_key = True
+            if COMBINED_FLAG in rule:
+                combined_flags.append(field)
+            elif "唯一" in rule and not matched_key:
+                single_uniques.append(field)
             if "索引" in rule:
                 indexes.append(field)
         if not any("PRIMARY KEY" in c for c in columns):
@@ -78,7 +101,17 @@ def parse_detailed_tables(text: str) -> list[str]:
                 if c.startswith("`id`") or c.startswith("`customer_id`") and name == "fin_customer_profile":
                     columns[n] += " PRIMARY KEY"
                     break
-        for field in uniques:
+        if combined_flags:
+            flag_columns = tuple(dict.fromkeys(combined_flags))
+            if len(flag_columns) > 1 and flag_columns not in combined_keys:
+                combined_keys.append(flag_columns)
+        for key_columns in combined_keys:
+            key_name = f"uk_{name}_" + "_".join(key_columns)
+            if len(key_name) > MAX_INDEX_NAME:
+                key_name = key_name[:MAX_INDEX_NAME]
+            rendered = ", ".join(f"`{column}`" for column in key_columns)
+            columns.append(f"UNIQUE KEY `{key_name}` ({rendered})")
+        for field in dict.fromkeys(single_uniques):
             if not any(f"`{field}`" in c and "PRIMARY KEY" in c for c in columns):
                 columns.append(f"UNIQUE KEY `uk_{name}_{field}` (`{field}`)")
         for field in indexes: