Stored procedure call returns wrong BigDecimal scale.

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerCallableStatement.java

@@ -23,6 +23,7 @@
 import java.sql.SQLXML;
 import java.sql.Time;
 import java.sql.Timestamp;
+import java.sql.ParameterMetaData;
 import java.text.MessageFormat;
 import java.time.LocalDateTime;
 import java.util.Calendar;
@@ -150,6 +151,16 @@ public void registerOutParameter(int index, int sqlType) throws SQLServerExcepti
             case microsoft.sql.Types.DATETIMEOFFSET:
                 param.setOutScale(7);
                 break;
+            case java.sql.Types.DECIMAL:
+                ParameterMetaData parameterMetaData = this.getParameterMetaData();
+                if (parameterMetaData != null) {
+                    try {
+                        // Fetch scale from metadata for DECIMAL type
+                        int scale = parameterMetaData.getScale(index);
+                        param.setOutScale(scale);
+                    } catch (SQLException e) {}
+                } 
+                break;
             default:
                 break;
         }

src/test/java/com/microsoft/sqlserver/jdbc/unit/statement/StatementTest.java

@@ -1195,15 +1195,14 @@ public void testJdbc41CallableStatementMethods() throws Exception {
                     assertEquals("2017-05-19 10:47:15.1234567 +02:00",
                             cstmt.getObject("col14Value", microsoft.sql.DateTimeOffset.class).toString());
 
-                    // BigDecimal#equals considers the number of decimal places (OutParams always return 4 decimal
-                    // digits rounded up)
-                    assertEquals(0, cstmt.getObject(15, BigDecimal.class).compareTo(new BigDecimal("0.1235")));
+                    // BigDecimal#equals considers the number of decimal places (OutParams always return full precision as specified in the DB schema)
+                    assertEquals(0, cstmt.getObject(15, BigDecimal.class).compareTo(new BigDecimal("0.123456789")));
                     assertEquals(0,
-                            cstmt.getObject("col15Value", BigDecimal.class).compareTo(new BigDecimal("0.1235")));
+                            cstmt.getObject("col15Value", BigDecimal.class).compareTo(new BigDecimal("0.123456789")));
 
-                    assertEquals(0, cstmt.getObject(16, BigDecimal.class).compareTo(new BigDecimal("0.1235")));
+                    assertEquals(0, cstmt.getObject(16, BigDecimal.class).compareTo(new BigDecimal("0.1234567890123456789012345678901234567")));
                     assertEquals(0,
-                            cstmt.getObject("col16Value", BigDecimal.class).compareTo(new BigDecimal("0.1235")));
+                            cstmt.getObject("col16Value", BigDecimal.class).compareTo(new BigDecimal("0.1234567890123456789012345678901234567")));
                 }
             }
         }