mysql_create_table now accepts field lengths in CREATE form, not in internal form.

This is to simplify fixing indexes to mean number of chars rather than bytes too.

sql/field.cc

@@ -5480,6 +5480,27 @@ create_field::create_field(Field *old_field,Field *orig_field)
   if (flags & BLOB_FLAG)
     pack_length= (pack_length- old_field->table->blob_ptr_size +
 		  portable_sizeof_char_ptr);
+
+  switch (sql_type)
+  {
+    case FIELD_TYPE_BLOB:
+      switch (pack_length - portable_sizeof_char_ptr)
+      {
+        case  1: sql_type= FIELD_TYPE_TINY_BLOB; break;
+        case  2: sql_type= FIELD_TYPE_BLOB; break;
+        case  3: sql_type= FIELD_TYPE_MEDIUM_BLOB; break;
+        default: sql_type= FIELD_TYPE_LONG_BLOB; break;
+      }
+      length /= charset->mbmaxlen;
+      break;
+    case FIELD_TYPE_STRING:
+    case FIELD_TYPE_VAR_STRING:
+      length /= charset->mbmaxlen;
+      break;
+    default:
+      break;
+  }
+  
   decimals= old_field->decimals();
   if (sql_type == FIELD_TYPE_STRING)
   {

sql/sql_parse.cc

@@ -2050,14 +2050,6 @@ mysql_execute_command(THD *thd)
                                      (Table_ident *)lex->name); 
       else
       {
-	List_iterator<create_field> fields(lex->create_list);
-	create_field *field;
-	while ((field= fields++))
-	{
-	  if (!field->charset)
-	    field->charset= lex->create_info.table_charset;
-	  field->create_length_to_internal_length();
-	}
         res= mysql_create_table(thd,tables->db ? tables->db : thd->db,
 			         tables->real_name, &lex->create_info,
 			         lex->create_list,

sql/sql_table.cc

@@ -422,6 +422,10 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
 
   for (field_no=0; (sql_field=it++) ; field_no++)
   {
+    if (!sql_field->charset)
+      sql_field->charset= create_info->table_charset;
+    sql_field->create_length_to_internal_length();
+    
     /* Don't pack keys in old tables if the user has requested this */
     if ((sql_field->flags & BLOB_FLAG) ||
 	sql_field->sql_type == FIELD_TYPE_VAR_STRING &&
@@ -1916,19 +1920,6 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
   List<Key> key_list;				// Add new keys here
   create_field *def;
 
-  /* 
-    For each column set charset to the table 
-    default if the column charset hasn't been specified
-    explicitely. Change CREATE length into internal length
-  */
-  def_it.rewind();
-  while ((def= def_it++))
-  {
-    if (!def->charset)
-      def->charset= create_info->table_charset;
-    def->create_length_to_internal_length();
-  }
-
   /*
     First collect all fields from table which isn't in drop_list
   */