diff --git a/client/mysql.cc b/client/mysql.cc
index edbfd53..84a491e 100644
--- a/client/mysql.cc
+++ b/client/mysql.cc
@@ -186,6 +186,7 @@ static MEM_ROOT hash_mem_root;
 static uint prompt_counter;
 static char delimiter[16]= DEFAULT_DELIMITER;
 static uint delimiter_length= 1;
+static int interval = 0;
 unsigned short terminal_width= 80;
 
 #ifdef HAVE_SMEM
@@ -216,6 +217,7 @@ static int com_quit(String *str,char*),
 	   com_rehash(String *str, char*), com_tee(String *str, char*),
            com_notee(String *str, char*), com_charset(String *str,char*),
            com_prompt(String *str, char*), com_delimiter(String *str, char*),
+           com_interval(String *str, char*),
      com_warnings(String *str, char*), com_nowarnings(String *str, char*);
 
 #ifdef USE_POPEN
@@ -263,6 +265,7 @@ static COMMANDS commands[] = {
     "Reconnect to the server. Optional arguments are db and host." },
   { "delimiter", 'd', com_delimiter,    1,
     "Set statement delimiter." },
+  { "interval", 'i', com_interval, 1, "Set multi queries execute sleep interval."},
 #ifdef USE_POPEN
   { "edit",   'e', com_edit,   0, "Edit command with $EDITOR."},
 #endif
@@ -2179,6 +2182,13 @@ static bool add_line(String &buffer,char *line,char *in_string,
       {
         if (com_go(&buffer, 0) > 0)             // < 0 is not fatal
           DBUG_RETURN(1);
+
+        if ( interval > 0 ){
+          if(verbose){
+            put_info("sleepping before execute next query", INFO_INFO);
+          }
+          sleep(interval);
+        }
       }
       buffer.length(0);
     }
@@ -4135,6 +4145,41 @@ com_delimiter(String *buffer __attribute__((unused)), char *line)
 
 	/* ARGSUSED */
 static int
+com_interval(String *buffer __attribute__((unused)), char *line)
+{
+  char buff[256], *tmp;
+
+  strmake(buff, line, sizeof(buff) - 1);
+  tmp= get_arg(buff, 0);
+
+  if (!tmp || !*tmp)
+  {
+    interval = 0;
+    put_info("Use default interval '0s'.",
+	     INFO_INFO);
+    return 0;
+  }
+  else
+  {
+    for (uint i=0;i<(uint) strlen(tmp)-1;i++){
+      if(!(tmp[i] > '0' and tmp[i] < '9')){
+        put_info("Interval value must be digit.", INFO_ERROR);
+        return 0;
+      }
+    }
+
+    if (interval > 86400 ){
+      put_info("interval too long time, maybe 86400 is long enough", INFO_ERROR);
+      return 0;
+    }
+  }
+  interval = atoi(tmp);
+  return 0;
+}
+
+
+	/* ARGSUSED */
+static int
 com_use(String *buffer __attribute__((unused)), char *line)
 {
   char *tmp, buff[FN_REFLEN + 1];