diff --git a/src/main/java/com/guozhi/bloodanalysis/parser/utils/KColumnProvider.java b/src/main/java/com/guozhi/bloodanalysis/parser/utils/KColumnProvider.java
index 52829f5..bd04ada 100644
--- a/src/main/java/com/guozhi/bloodanalysis/parser/utils/KColumnProvider.java
+++ b/src/main/java/com/guozhi/bloodanalysis/parser/utils/KColumnProvider.java
@@ -34,16 +34,21 @@ public class KColumnProvider {
 	            return table.getColumns();
 	        }else {
 				String[] arr = tableName.split("\\.");
-				List<Map<String,String>> colList = metaBloodAnalysisMapper.getColumnsByTable(arr[arr.length-1], vt.db,vt.schema);
+				List<Map<String,String>> colList;
+				if(vt != null && vt.db != null && vt.schema != null ){
+					colList = metaBloodAnalysisMapper.getColumnsByTable(arr[arr.length-1], vt.db,vt.schema);
+				}else{
+					colList = metaBloodAnalysisMapper.getColumnsByTable(arr[arr.length-1], context.getDefaultDb(), context.getDefaultSchema());
+				}
 				if(colList.size()>0){
-					List<KColumn> cols = new ArrayList<KColumn>();
+					List<KColumn> cols = new ArrayList<>();
 					for (Map<String, String> colMap : colList) {
 						KColumn col = new KColumn();
 //						col.columnPrefix = vt.alias;
 						col.columnName = colMap.get("colCode");
 						col.alias = col.columnName;
-						col.db = vt.db;
-						col.schema = vt.schema;
+						col.db = context.getDefaultDb();
+						col.schema = context.getDefaultSchema();
 						col.tableName = tableName;
 						col.isEvTable = true;
 						cols.add(col);
diff --git a/src/main/resources/mapper/MetaBloodAnalysisMapper.xml b/src/main/resources/mapper/MetaBloodAnalysisMapper.xml
index 3229f7b..377e899 100644
--- a/src/main/resources/mapper/MetaBloodAnalysisMapper.xml
+++ b/src/main/resources/mapper/MetaBloodAnalysisMapper.xml
@@ -29,25 +29,25 @@
         select a.onum as onum,a.ssys_id as ssysId,a.mdl_name as mdlName,a.tab_eng_name as tabEngName, b.tab_cn_name as tabCnName,
                a.fld_eng_name as fldEngName,a.fld_cn_name as fldCnName from t_metadata_fld_tab_extract_info a
         left join t_metadata_extract_info b on a.ssys_id = b.ssys_id and a.mdl_name = b.mdl_name and a.tab_eng_name = b.tab_eng_name
-        where a.ssys_id = #{db} and a.mdl_name = #{schema} and a.tab_eng_name = #{tableCode} and a.fld_eng_name = #{columnName}
+        where a.ssys_id = #{db} and UPPER(a.mdl_name) = UPPER(#{schema}) and UPPER(a.tab_eng_name) = UPPER(#{tableCode}) and UPPER(a.fld_eng_name) = UPPER(#{columnName})
     </select>
     <select id="getColumnsByTabId" resultType="java.util.Map">
         select a.fld_eng_name as colCode, a.fld_cn_name as colName,a.fld_no as fldNo from t_metadata_fld_tab_extract_info a
         left join t_metadata_extract_info b on a.ssys_id = b.ssys_id and a.mdl_name = b.mdl_name and a.tab_eng_name = b.tab_eng_name
         where b.onum = #{tableId}
         <if test="colCode != null and colCode !=''">
-            and a.fld_eng_name = #{colCode}
+            and UPPER(a.fld_eng_name) = UPPER(#{colCode})
         </if>
         order by a.fld_no
     </select>
     <select id="getColumnsByTable" resultType="java.util.Map">
         select fld_eng_name as colCode, fld_cn_name as colName,fld_no as fldNo from t_metadata_fld_tab_extract_info
-        where ssys_id =#{ssysId} and mdl_name = #{mdlName} and tab_eng_name = #{tableName}
+        where ssys_id =#{ssysId} and UPPER(mdl_name) = UPPER(#{mdlName}) and UPPER(tab_eng_name) = UPPER(#{tableName})
         order by fld_no
 
     </select>
     <select id="getSystem" resultType="java.util.Map">
-        select ssys_id as SYS_ID, mdl_name as SCH_CODE, mdl_name as SCH_NAME, tab_eng_name as TAB_CODE, tab_cn_name as TAB_NAME, onum as TAB_ID from t_metadata_extract_info where mdl_name = #{schema} and tab_eng_name = #{tableCode}
+        select ssys_id as SYS_ID, mdl_name as SCH_CODE, mdl_name as SCH_NAME, tab_eng_name as TAB_CODE, tab_cn_name as TAB_NAME, onum as TAB_ID from t_metadata_extract_info where UPPER(mdl_name) = UPPER(#{schema}) and UPPER(tab_eng_name) = UPPER(#{tableCode})
     </select>
     <delete id="deleteAllBloodData">
         delete from meta_blood_analysis
diff --git a/src/main/resources/mapper/TableAndColumnsMapper.xml b/src/main/resources/mapper/TableAndColumnsMapper.xml
index 67486f7..9b30b78 100644
--- a/src/main/resources/mapper/TableAndColumnsMapper.xml
+++ b/src/main/resources/mapper/TableAndColumnsMapper.xml
@@ -14,7 +14,7 @@
         from t_metadata_fld_tab_extract_info a
         left join t_metadata_fld_supp_info b
         on a.ssys_id = b.ssys_id and a.mdl_name = b.mdl_name and a.tab_eng_name = b.tab_eng_name and a.fld_eng_name = b.fld_eng_name
-        where a.ssys_id = #{ssysId} and a.mdl_name = #{mdlName} and a.tab_eng_name = #{tableName}
+        where a.ssys_id = #{ssysId} and UPPER(a.mdl_name) = UPPER(#{mdlName}) and UPPER(a.tab_eng_name) = UPPER(#{tableName})
         order by a.fld_no
     </select>
     <select id="getTableNameByTable" resultType="java.lang.String">
@@ -22,6 +22,6 @@
         from t_metadata_extract_info a
         left join t_metadata_supp_info b
         on a.ssys_id = b.ssys_id and a.mdl_name = b.mdl_name and a.tab_eng_name = b.tab_eng_name
-        where a.ssys_id = #{ssysId} and a.mdl_name = #{mdlName} and a.tab_eng_name = #{tableName}
+        where a.ssys_id = #{ssysId} and UPPER(a.mdl_name) = UPPER(#{mdlName}) and UPPER(a.tab_eng_name) = UPPER(#{tableName})
     </select>
 </mapper>
\ No newline at end of file