Fix decimal parameters having scale > width (#303)

Author: rynoV

DuckDB.NET.Data/PreparedStatement/ClrToDuckDBConverter.cs

@@ -173,7 +173,7 @@ private static DuckDBValue DecimalToDuckDBValue(decimal value)
 
         result += new BigInteger(decimal.Multiply(fractionalPart, (decimal)power));
 
-        int width = result.IsZero ? 1 : (int)Math.Floor(BigInteger.Log10(BigInteger.Abs(result))) + 1;
+        int width = Math.Max(scale, result.IsZero ? 1 : (int)Math.Floor(BigInteger.Log10(BigInteger.Abs(result))) + 1);
 
         return NativeMethods.Value.DuckDBCreateDecimal(new DuckDBDecimal((byte)width, scale, new DuckDBHugeInt(result)));
     }

DuckDB.NET.Test/Parameters/DecimalParameterTest.cs

@@ -168,4 +168,21 @@ public void BindParameterWithoutTable()
             result.Should().BeOfType<decimal>().Subject.Should().Be(value);
         }
     }
-}
+}    [Fact]
+    public void BindParameterInComparison()
+    {
+        decimal[] values = [decimal.Zero, 0.00m, 123456789.987654321m, -123456789.987654321m, 1.230m, -1.23m,
+                            0.000000001m, -0.000000001m, 1000000.000000001m, -1000000.000000001m, 1.123456789012345678901m];
+
+        foreach (var value in values)
+        {
+            Command.CommandText = "SELECT 0.1 > ?;";
+            Command.Parameters.Clear();
+            Command.Parameters.Add(new DuckDBParameter(value));
+
+            var result = Command.ExecuteScalar();
+
+            result.Should().BeOfType<bool>();
+        }
+    }
+}