Fix for bug #10896 (0.00 > -0.00)

mysql-test/r/type_newdecimal.result:
  test result fixed
mysql-test/t/type_newdecimal.test:
  test case added
sql/my_decimal.h:
  we neede to check for zero here not to get -0.00

1 files changed, 5 insertions, 0 deletions

diff --git a/sql/my_decimal.h b/sql/my_decimal.h
index 27fd33cffbe..b65e6aedaa2 100644
--- a/sql/my_decimal.h
+++ b/sql/my_decimal.h
@@ -290,6 +290,11 @@ int int2my_decimal(uint mask, longlong i, my_bool unsigned_flag, my_decimal *d)
 inline
 void my_decimal_neg(decimal_t *arg)
 {
+  if (decimal_is_zero(arg))
+  {
+    arg->sign= 0;
+    return;
+  }
   decimal_neg(arg);
 }