Merge sanja.is.com.ua:/home/bell/mysql/bk/mysql-5.0

into sanja.is.com.ua:/home/bell/mysql/bk/work-error-5.0

1 files changed, 10 insertions, 3 deletions

diff --git a/sql/item.cc b/sql/item.cc
index 6ebe34f91dc..f05a0b30db4 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -138,7 +138,7 @@ bool Item::cleanup_processor(byte *arg)
 Item_ident::Item_ident(const char *db_name_par,const char *table_name_par,
 		       const char *field_name_par)
   :orig_db_name(db_name_par), orig_table_name(table_name_par), 
-   orig_field_name(field_name_par),
+   orig_field_name(field_name_par), alias_name_used(FALSE),
    db_name(db_name_par), table_name(table_name_par), 
    field_name(field_name_par), cached_field_index(NO_CACHED_FIELD_INDEX), 
    cached_table(0), depended_from(0)
@@ -152,6 +152,7 @@ Item_ident::Item_ident(THD *thd, Item_ident *item)
    orig_db_name(item->orig_db_name),
    orig_table_name(item->orig_table_name), 
    orig_field_name(item->orig_field_name),
+   alias_name_used(item->alias_name_used),
    db_name(item->db_name),
    table_name(item->table_name),
    field_name(item->field_name),
@@ -609,6 +610,7 @@ void Item_field::set_field(Field *field_par)
   table_name=field_par->table_name;
   field_name=field_par->field_name;
   db_name=field_par->table->table_cache_key;
+  alias_name_used= field_par->table->alias_name_used;
   unsigned_flag=test(field_par->flags & UNSIGNED_FLAG);
   collation.set(field_par->charset(), DERIVATION_IMPLICIT);
   fixed= 1;
@@ -658,7 +660,8 @@ void Item_ident::print(String *str)
   THD *thd= current_thd;
   char d_name_buff[MAX_ALIAS_NAME], t_name_buff[MAX_ALIAS_NAME];
   const char *d_name= db_name, *t_name= table_name;
-  if (lower_case_table_names)
+  if (lower_case_table_names== 1 ||
+      (lower_case_table_names == 2 && !alias_name_used))
   {
     if (table_name && table_name[0])
     {
@@ -680,7 +683,7 @@ void Item_ident::print(String *str)
     append_identifier(thd, str, nm, strlen(nm));
     return;
   }
-  if (db_name && db_name[0])
+  if (db_name && db_name[0] && !alias_name_used)
   {
     append_identifier(thd, str, d_name, strlen(d_name));
     str->append('.');
@@ -2937,6 +2940,10 @@ bool Item_ref::fix_fields(THD *thd, TABLE_LIST *tables, Item **reference)
   decimals=   (*ref)->decimals;
   collation.set((*ref)->collation);
   with_sum_func= (*ref)->with_sum_func;
+  if ((*ref)->type() == FIELD_ITEM)
+    alias_name_used= ((Item_ident *) (*ref))->alias_name_used;
+  else
+    alias_name_used= TRUE; // it is not field, so it is was resolved by alias
   fixed= 1;
 
   if (ref && (*ref)->check_cols(1))