diff --git a/mysql-test/r/union.result b/mysql-test/r/union.result
index f58f0f5b0ac..bfa169af417 100644
--- a/mysql-test/r/union.result
+++ b/mysql-test/r/union.result
@@ -1195,3 +1195,8 @@ a	b
 2	b
 3	c
 drop table t1;
+set @val:=6;
+select concat('value is: ', @val) union select 'some text';
+concat('value is: ', @val)
+value is: 6
+some text
diff --git a/mysql-test/r/user_var.result b/mysql-test/r/user_var.result
index d82c17b0fe0..d8425899b77 100644
--- a/mysql-test/r/user_var.result
+++ b/mysql-test/r/user_var.result
@@ -193,3 +193,10 @@ set @var= NULL ;
 select FIELD( @var,'1it','Hit') as my_column;
 my_column
 0
+select @v, coercibility(@v);
+@v	coercibility(@v)
+NULL	2
+set @v1=null, @v2=1, @v3=1.1, @v4=now();
+select coercibility(@v1),coercibility(@v2),coercibility(@v3),coercibility(@v4);
+coercibility(@v1)	coercibility(@v2)	coercibility(@v3)	coercibility(@v4)
+2	2	2	2
diff --git a/mysql-test/t/union.test b/mysql-test/t/union.test
index 82f26f63254..26dc544482e 100644
--- a/mysql-test/t/union.test
+++ b/mysql-test/t/union.test
@@ -711,3 +711,9 @@ select * from ((select * from t1 limit 1) union (select * from t1 limit 1) union
 select * from ((((select * from t1))) union (select * from t1) union (select * from t1)) a;
 select * from ((select * from t1) union (((select * from t1))) union (select * from t1)) a;
 drop table t1;
+
+#
+# Bugs#6519 UNION with collation binary and latin1_swedish_ci fails
+#
+set @val:=6;
+select concat('value is: ', @val) union select 'some text';
diff --git a/mysql-test/t/user_var.test b/mysql-test/t/user_var.test
index 2f526dc9a46..cfeb5f228a7 100644
--- a/mysql-test/t/user_var.test
+++ b/mysql-test/t/user_var.test
@@ -122,3 +122,10 @@ drop table t1;
 #
 set @var= NULL ;
 select FIELD( @var,'1it','Hit') as my_column;
+
+#
+# Bug#9425 A user variable doesn't always have implicit coercibility
+#
+select @v, coercibility(@v);
+set @v1=null, @v2=1, @v3=1.1, @v4=now();
+select coercibility(@v1),coercibility(@v2),coercibility(@v3),coercibility(@v4);
diff --git a/ndb/src/kernel/blocks/dbdict/printSchemafile/printSchemafile.cpp b/ndb/src/kernel/blocks/dbdict/printSchemaFile.cpp
similarity index 89%
rename from ndb/src/kernel/blocks/dbdict/printSchemafile/printSchemafile.cpp
rename to ndb/src/kernel/blocks/dbdict/printSchemaFile.cpp
index bf721a0b30a..0ba52878b7c 100644
--- a/ndb/src/kernel/blocks/dbdict/printSchemafile/printSchemafile.cpp
+++ b/ndb/src/kernel/blocks/dbdict/printSchemaFile.cpp
@@ -1,3 +1,11 @@
+#if 0
+make -f Makefile -f - printSchemaFile <<'_eof_'
+printSchemaFile: printSchemaFile.cpp
+	$(CXXCOMPILE) -o $@ $@.cpp -L../../../common/util/.libs -lgeneral
+_eof_
+exit $?
+#endif
+
 /* Copyright (C) 2003 MySQL AB
 
    This program is free software; you can redistribute it and/or modify
@@ -92,6 +100,13 @@ NDB_COMMAND(printSchemafile,
   }
   
   print(filename, (SchemaFile *)&buf[0]);
+
+  Uint32 chk = 0, i;
+  for (i = 0; i < bytes/4; i++)
+    chk ^= buf[i];
+  if (chk != 0)
+    ndbout << "Invalid checksum!" << endl;
+
   delete [] buf;
   return 0;
 }
diff --git a/ndb/src/kernel/blocks/dbdict/printSchemafile/Makefile b/ndb/src/kernel/blocks/dbdict/printSchemafile/Makefile
deleted file mode 100644
index 1b097e2ce37..00000000000
--- a/ndb/src/kernel/blocks/dbdict/printSchemafile/Makefile
+++ /dev/null
@@ -1,12 +0,0 @@
-include .defs.mk
-
-TYPE := ndbapi
-
-BIN_TARGET := printSchemafile
-BIN_TARGET_ARCHIVES := portlib general
-
-CCFLAGS_LOC += -I..
-
-SOURCES := printSchemafile.cpp
-
-include $(NDB_TOP)/Epilogue.mk
diff --git a/sql/item_func.cc b/sql/item_func.cc
index ade394f90d3..eb6e395c266 100644
--- a/sql/item_func.cc
+++ b/sql/item_func.cc
@@ -2634,20 +2634,20 @@ Item_func_set_user_var::update()
   case REAL_RESULT:
   {
     res= update_hash((void*) &save_result.vreal,sizeof(save_result.vreal),
-		     REAL_RESULT, &my_charset_bin, DERIVATION_NONE);
+		     REAL_RESULT, &my_charset_bin, DERIVATION_IMPLICIT);
     break;
   }
   case INT_RESULT:
   {
     res= update_hash((void*) &save_result.vint, sizeof(save_result.vint),
-		     INT_RESULT, &my_charset_bin, DERIVATION_NONE);
+		     INT_RESULT, &my_charset_bin, DERIVATION_IMPLICIT);
     break;
   }
   case STRING_RESULT:
   {
     if (!save_result.vstr)					// Null value
       res= update_hash((void*) 0, 0, STRING_RESULT, &my_charset_bin,
-		       DERIVATION_NONE);
+		       DERIVATION_IMPLICIT);
     else
       res= update_hash((void*) save_result.vstr->ptr(),
 		       save_result.vstr->length(), STRING_RESULT,
@@ -2870,7 +2870,10 @@ void Item_func_get_user_var::fix_length_and_dec()
     }
   }
   else
+  {
+    collation.set(&my_charset_bin, DERIVATION_IMPLICIT);
     null_value= 1;
+  }
 
   if (error)
     thd->fatal_error();