MDEV-5039: incorrect Item_func_regex::update_used_tables()

Other fix of maybe_null problem and revert of revno: 3608 "MDEV-3873 & MDEV-3876 & MDEV-3912 : Wrong result (extra rows) with ALL subquery from a MERGE view."

1 files changed, 13 insertions, 13 deletions

diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc
index 50ca7d91a53..a21dd9cc02a 100644
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -272,7 +272,7 @@ String *Item_func_aes_decrypt::val_str(String *str)
 void Item_func_aes_decrypt::fix_length_and_dec()
 {
    max_length=args[0]->max_length;
-   set_persist_maybe_null(1);
+   maybe_null= 1;
 }
 
 
@@ -435,7 +435,7 @@ void Item_func_concat::fix_length_and_dec()
   if (max_result_length >= MAX_BLOB_WIDTH)
   {
     max_result_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
   max_length= (ulong) max_result_length;
 }
@@ -795,7 +795,7 @@ void Item_func_concat_ws::fix_length_and_dec()
   if (max_result_length >= MAX_BLOB_WIDTH)
   {
     max_result_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
   max_length= (ulong) max_result_length;
 }
@@ -997,7 +997,7 @@ void Item_func_replace::fix_length_and_dec()
   if (max_result_length >= MAX_BLOB_WIDTH)
   {
     max_result_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
   max_length= (ulong) max_result_length;
   
@@ -1081,7 +1081,7 @@ void Item_func_insert::fix_length_and_dec()
   if (max_result_length >= MAX_BLOB_WIDTH)
   {
     max_result_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
   max_length= (ulong) max_result_length;
 }
@@ -2186,7 +2186,7 @@ void Item_func_elt::fix_length_and_dec()
     set_if_bigger(max_length,args[i]->max_length);
     set_if_bigger(decimals,args[i]->decimals);
   }
-  set_persist_maybe_null(1);			  // NULL if wrong first arg
+  maybe_null=1;					// NULL if wrong first arg
 }
 
 
@@ -2366,14 +2366,14 @@ void Item_func_repeat::fix_length_and_dec()
     if (max_result_length >= MAX_BLOB_WIDTH)
     {
       max_result_length= MAX_BLOB_WIDTH;
-      set_persist_maybe_null(1);
+      maybe_null= 1;
     }
     max_length= (ulong) max_result_length;
   }
   else
   {
     max_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
 }
 
@@ -2458,14 +2458,14 @@ void Item_func_rpad::fix_length_and_dec()
     if (length >= MAX_BLOB_WIDTH)
     {
       length= MAX_BLOB_WIDTH;
-      set_persist_maybe_null(1);
+      maybe_null= 1;
     }
     max_length= (ulong) length;
   }
   else
   {
     max_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
 }
 
@@ -2577,14 +2577,14 @@ void Item_func_lpad::fix_length_and_dec()
     if (length >= MAX_BLOB_WIDTH)
     {
       length= MAX_BLOB_WIDTH;
-      set_persist_maybe_null(1);
+      maybe_null= 1;
     }
     max_length= (ulong) length;
   }
   else
   {
     max_length= MAX_BLOB_WIDTH;
-    set_persist_maybe_null(1);
+    maybe_null= 1;
   }
 }
 
@@ -3499,7 +3499,7 @@ bool Item_func_dyncol_create::fix_fields(THD *thd, Item **ref)
 
 void Item_func_dyncol_create::fix_length_and_dec()
 {
-  set_persist_maybe_null(1);
+  maybe_null= TRUE;
   collation.set(&my_charset_bin);
   decimals= 0;
 }