diff --git a/backend/apps/chat/models/chat_model.py b/backend/apps/chat/models/chat_model.py
index f095a65d..7271502a 100644
--- a/backend/apps/chat/models/chat_model.py
+++ b/backend/apps/chat/models/chat_model.py
@@ -24,7 +24,8 @@ class Chat(SQLModel, table=True):
     chat_type: str = Field(max_length=20, default="chat")  # chat, datasource
     datasource: int = Field(sa_column=Column(BigInteger, nullable=True))
     engine_type: str = Field(max_length=64)
-    origin: Optional[int] = Field(sa_column=Column(Integer, nullable=False, default=0))  # 0: default, 1: mcp, 2: assistant
+    origin: Optional[int] = Field(
+        sa_column=Column(Integer, nullable=False, default=0))  # 0: default, 1: mcp, 2: assistant
 
 
 class ChatRecord(SQLModel, table=True):
@@ -152,11 +153,12 @@ class AiModelQuestion(BaseModel):
 
 
 class ChatQuestion(AiModelQuestion):
-    question: str = ''
-    chat_id: int = 0
+    question: str
+    chat_id: int
+
 
 class ChatMcp(ChatQuestion):
-    token: str = ''
+    token: str
 
 
 class ChatStart(BaseModel):
diff --git a/backend/apps/system/crud/assistant.py b/backend/apps/system/crud/assistant.py
index 76c8c3bf..d56acb97 100644
--- a/backend/apps/system/crud/assistant.py
+++ b/backend/apps/system/crud/assistant.py
@@ -132,14 +132,24 @@ class AssistantOutDs:
     def get_db_schema(self, ds_id: int) -> str:
         ds = self.get_ds(ds_id)
         schema_str = ""
-        db_name = ds.db_schema
+        #db_name = ds.db_schema
+        db_name = ds.db_schema if ds.db_schema is not None and ds.db_schema != "" else ds.dataBase
         schema_str += f"【DB_ID】 {db_name}\n【Schema】\n"
         for table in ds.tables:
-            schema_str += f"# Table: {db_name}.{table.name}"
-            schema_str += f", {table.comment}\n[\n"
+            schema_str += f"# Table: {db_name}.{table.name}" if ds.type != "mysql" else f"# Table: {table.name}"
+            table_comment = table.comment
+            if table_comment == '':
+                schema_str += '\n[\n'
+            else:
+                schema_str += f", {table_comment}\n[\n"
+                
             field_list = []
             for field in table.fields:
-                field_list.append(f"({field.name}:{field.type}, {field.comment})")
+                field_comment = field.comment
+                if field_comment == '':
+                    field_list.append(f"({field.name}:{field.type})")
+                else:
+                    field_list.append(f"({field.name}:{field.type}, {field_comment})")
             schema_str += ",\n".join(field_list)
             schema_str += '\n]\n'
         return schema_str
diff --git a/backend/common/utils/utils.py b/backend/common/utils/utils.py
index bbc4c2a0..9d35dd4b 100644
--- a/backend/common/utils/utils.py
+++ b/backend/common/utils/utils.py
@@ -76,7 +76,9 @@ def extract_nested_json(text):
 
 def string_to_numeric_hash(text: str, bits: Optional[int] = 64) -> int:
     hash_bytes = hashlib.sha256(text.encode()).digest()
-    return int.from_bytes(hash_bytes[:bits//8], byteorder='big')
+    hash_num = int.from_bytes(hash_bytes, byteorder='big')
+    max_bigint = 2**63 - 1
+    return hash_num % max_bigint
 
 
 def setup_logging():
diff --git a/frontend/src/i18n/en.json b/frontend/src/i18n/en.json
index 1298b7e2..e7645eb2 100644
--- a/frontend/src/i18n/en.json
+++ b/frontend/src/i18n/en.json
@@ -294,7 +294,7 @@
     "filter": "Filter",
     "batch_import": "Batch import",
     "add_users": "Add users",
-    "selected_2_users": "Do you want to delete the selected 2 users?",
+    "selected_2_users": "Do you want to delete the selected {msg} users?",
     "filter_conditions": "Filter conditions",
     "enable": "Enable",
     "disable": "Disable",
diff --git a/frontend/src/views/ds/Datasource.vue b/frontend/src/views/ds/Datasource.vue
index 4dd39791..0ad1aaa5 100644
--- a/frontend/src/views/ds/Datasource.vue
+++ b/frontend/src/views/ds/Datasource.vue
@@ -328,7 +328,7 @@ const back = () => {
             : $t('datasource.new_data_source')
         }}</span>
         <div v-if="!editDatasource" class="flex-center" style="width: 100%">
-          <el-steps custom style="max-width: 500px; flex: 1" :active="activeStep" align-center>
+          <el-steps custom style="max-width: 800px; flex: 1" :active="activeStep" align-center>
             <el-step>
               <template #title> {{ $t('qa.select_datasource') }} </template>
             </el-step>
diff --git a/frontend/src/views/system/embedded/Card.vue b/frontend/src/views/system/embedded/Card.vue
index b4dd726e..513944c3 100644
--- a/frontend/src/views/system/embedded/Card.vue
+++ b/frontend/src/views/system/embedded/Card.vue
@@ -69,7 +69,7 @@ const handleEmbedded = () => {
 
 <style lang="less" scoped>
 .card {
-  width: 371px;
+  width: 400px;
   height: 168px;
   border: 1px solid #dee0e3;
   padding: 16px;
diff --git a/frontend/src/views/system/embedded/index.vue b/frontend/src/views/system/embedded/index.vue
index a076917d..39c4f9b0 100644
--- a/frontend/src/views/system/embedded/index.vue
+++ b/frontend/src/views/system/embedded/index.vue
@@ -737,7 +737,9 @@ const saveHandler = () => {
             <template #label>
               <div class="private-list">
                 {{ t('embedded.set_data_source') }}
-                <span class="open-the_query">{{ $t('embedded.open_the_query') }} </span>
+                <span :title="$t('embedded.open_the_query')" class="open-the_query ellipsis"
+                  >{{ $t('embedded.open_the_query') }}
+                </span>
               </div>
             </template>
             <div class="card-ds_content">
@@ -971,6 +973,7 @@ const saveHandler = () => {
     .open-the_query {
       color: #ff8800;
       margin-left: 4px;
+      max-width: 650px;
     }
   }
 
@@ -1069,7 +1072,7 @@ const saveHandler = () => {
       position: relative;
     }
     .popover-item {
-      height: 98px;
+      min-height: 98px;
       display: flex;
       padding-left: 8px;
       padding-right: 8px;