新增快手平台和对应的接口

service/sync/table_manager.go

@@ -86,18 +86,29 @@ func buildCreateSQL(td *TableDefinition) string {
 	}
 	cols = append(cols, "raw_data JSONB DEFAULT '{}'")
 
-	// 添加复合唯一索引（用于 ON CONFLICT upsert，所有 conflict_keys 作为一个复合索引）
+	// 添加复合唯一索引（用于 ON CONFLICT upsert）
 	var constraints []string
 	if len(td.ConflictKeys) > 0 {
-		cols := strings.Join(td.ConflictKeys, ", ")
+		ck := strings.Join(td.ConflictKeys, ", ")
 		indexName := fmt.Sprintf("uq_%s_conflict", td.TableName)
 		constraints = append(constraints,
-			fmt.Sprintf("CREATE UNIQUE INDEX IF NOT EXISTS %s ON %s (%s)", indexName, td.TableName, cols))
+			fmt.Sprintf("CREATE UNIQUE INDEX IF NOT EXISTS %s ON %s (%s)", indexName, td.TableName, ck))
 	}
 
 	sql := fmt.Sprintf("CREATE TABLE IF NOT EXISTS %s (\n  %s\n);\n", td.TableName, strings.Join(cols, ",\n  "))
+
+	// 添加唯一索引
 	if len(constraints) > 0 {
-		sql += strings.Join(constraints, ";\n") + ";"
+		sql += strings.Join(constraints, ";\n") + ";\n"
 	}
+
+	// 添加字段注释（COMMENT ON COLUMN）
+	for _, c := range td.Columns {
+		if c.Comment != "" {
+			escaped := strings.ReplaceAll(c.Comment, "'", "''")
+			sql += fmt.Sprintf("COMMENT ON COLUMN %s.%s IS '%s';\n", td.TableName, c.Name, escaped)
+		}
+	}
+
 	return sql
 }