MDEV-38670 Unary minus on empty string returns -0 #4632
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Normalize -0.0 to +0.0 in Item_func_neg::real_op() to match binary subtraction behavior. Add test case in type_newdecimal.
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gkodinov
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Normalize -0.0 to +0.0 in Item_func_neg::real_op() to match binary subtraction behavior. Add a test case in type_newdecimal.