diff --git a/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/CopySQLBuilder.java b/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/CopySQLBuilder.java
index 62910d5d..f37c6dbe 100644
--- a/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/CopySQLBuilder.java
+++ b/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/CopySQLBuilder.java
@@ -6,6 +6,11 @@ import java.util.StringJoiner;
 
 public class CopySQLBuilder {
     private final static String COPY_SYNC = "copy.async";
+    private final static String FIELD_DELIMITER_KEY = "file.column_separator";
+    private final static String FIELD_DELIMITER_DEFAULT = "\t";
+    private final static String LINE_DELIMITER_KEY = "file.line_delimiter";
+    private final static String LINE_DELIMITER_DEFAULT = "\n";
+    private final static String COLUMNS = "columns";
     private final String fileName;
     private final Keys options;
     private Map<String, Object> properties;
@@ -21,18 +26,38 @@ public class CopySQLBuilder {
     public String buildCopySQL(){
         StringBuilder sb = new StringBuilder();
         sb.append("COPY INTO ")
-                .append(options.getDatabase() + "." + options.getTable())
-                .append(" FROM @~('").append(fileName).append("') ")
-                .append("PROPERTIES (");
+                .append(options.getDatabase() + "." + options.getTable());
+
+        if (properties.get(COLUMNS) != null && !properties.get(COLUMNS).equals("")) {
+            sb.append(" FROM ( SELECT ").append(properties.get(COLUMNS))
+                    .append(" FROM @~('").append(fileName).append("') ) ")
+                    .append("PROPERTIES (");
+        } else {
+            sb.append(" FROM @~('").append(fileName).append("') ")
+                    .append("PROPERTIES (");
+        }
 
         //copy into must be sync
         properties.put(COPY_SYNC,false);
         StringJoiner props = new StringJoiner(",");
         for(Map.Entry<String,Object> entry : properties.entrySet()){
             String key = String.valueOf(entry.getKey());
-            String value = String.valueOf(entry.getValue());
-            String prop = String.format("'%s'='%s'",key,value);
-            props.add(prop);
+            String value = "";
+            switch (key){
+                case FIELD_DELIMITER_KEY:
+                    value = DelimiterParser.parse(String.valueOf(entry.getValue()),FIELD_DELIMITER_DEFAULT);
+                    break;
+                case LINE_DELIMITER_KEY:
+                    value = DelimiterParser.parse(String.valueOf(entry.getValue()),LINE_DELIMITER_DEFAULT);
+                    break;
+                default:
+                    value = String.valueOf(entry.getValue());
+                    break;
+            }
+            if(!key.equals(COLUMNS)){
+                String prop = String.format("'%s'='%s'", key, value);
+                props.add(prop);
+            }
         }
         sb.append(props).append(" )");
         return sb.toString();
diff --git a/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbCopyIntoObserver.java b/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbCopyIntoObserver.java
index c9228b22..a05d5ca2 100644
--- a/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbCopyIntoObserver.java
+++ b/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbCopyIntoObserver.java
@@ -40,7 +40,7 @@ public class SelectdbCopyIntoObserver {
     private CloseableHttpClient httpClient;
     private static final String UPLOAD_URL_PATTERN = "%s/copy/upload";
     private static final String COMMIT_PATTERN = "%s/copy/query";
-    private static final Pattern COMMITTED_PATTERN = Pattern.compile("errCode = 2, detailMessage = No files can be copied, matched (\\d+) files, " + "filtered (\\d+) files because files may be loading or loaded");
+    private static final Pattern COMMITTED_PATTERN = Pattern.compile("errCode = 2, detailMessage = No files can be copied.*");
 
 
     public SelectdbCopyIntoObserver(Keys options) {
@@ -188,21 +188,24 @@ public class SelectdbCopyIntoObserver {
             if(success){
                 LOG.info("commit success cost {}ms, response is {}", System.currentTimeMillis() - start, loadResult);
             }else{
-                throw new SelectdbWriterException("commit fail",true);
+                LOG.error("commit error with status {}, reason {}, response {}", statusCode, reasonPhrase, loadResult);
+                String copyErrMsg = String.format("commit error, status: %d, reason: %s, response: %s, copySQL: %s",
+                        statusCode, reasonPhrase, loadResult, copySQL);
+                throw new SelectdbWriterException(copyErrMsg,true);
             }
         }
     }
 
     public boolean handleCommitResponse(String loadResult) throws IOException {
-        BaseResponse<CopyIntoResp> baseResponse = OBJECT_MAPPER.readValue(loadResult, new TypeReference<BaseResponse<CopyIntoResp>>(){});
+        BaseResponse baseResponse = OBJECT_MAPPER.readValue(loadResult, new TypeReference<BaseResponse>(){});
         if(baseResponse.getCode() == SUCCESS){
-            CopyIntoResp dataResp = baseResponse.getData();
+            CopyIntoResp dataResp = OBJECT_MAPPER.convertValue(baseResponse.getData(), CopyIntoResp.class);
             if(FAIL.equals(dataResp.getDataCode())){
                 LOG.error("copy into execute failed, reason:{}", loadResult);
                 return false;
             }else{
                 Map<String, String> result = dataResp.getResult();
-                if(!result.get("state").equals("FINISHED") && !isCommitted(result.get("msg"))){
+                if(SelectdbUtil.isNullOrEmpty(result) || !result.get("state").equals("FINISHED") && !isCommitted(result.get("msg"))){
                     LOG.error("copy into load failed, reason:{}", loadResult);
                     return false;
                 }else{
diff --git a/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbUtil.java b/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbUtil.java
index 6cfcc8bf..3e7961e8 100644
--- a/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbUtil.java
+++ b/selectdbwriter/src/main/java/com/alibaba/datax/plugin/writer/selectdbwriter/SelectdbUtil.java
@@ -15,6 +15,7 @@ import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 
 /**
  * jdbc util
@@ -110,4 +111,8 @@ public class SelectdbUtil {
             return reference;
         }
     }
+
+    public static boolean isNullOrEmpty(Map<?, ?> map) {
+        return map == null || map.isEmpty();
+    }
 }