1. delete invalid signature of nvl function

2. fix some test cases that failed because of malformed function name

Author: Kikyou1997

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/Nvl.java

@@ -28,7 +28,6 @@
 import org.apache.doris.nereids.types.DateTimeType;
 import org.apache.doris.nereids.types.DateTimeV2Type;
 import org.apache.doris.nereids.types.DateType;
-import org.apache.doris.nereids.types.DateV2Type;
 import org.apache.doris.nereids.types.DecimalV2Type;
 import org.apache.doris.nereids.types.DoubleType;
 import org.apache.doris.nereids.types.FloatType;
@@ -65,10 +64,6 @@ public class Nvl extends ScalarFunction
             FunctionSignature.ret(DateTimeType.INSTANCE).args(DateTimeType.INSTANCE, DateType.INSTANCE),
             FunctionSignature.ret(DateTimeV2Type.SYSTEM_DEFAULT)
                     .args(DateTimeV2Type.SYSTEM_DEFAULT, DateTimeV2Type.SYSTEM_DEFAULT),
-            FunctionSignature.ret(DateTimeV2Type.SYSTEM_DEFAULT)
-                    .args(DateV2Type.INSTANCE, DateTimeV2Type.SYSTEM_DEFAULT),
-            FunctionSignature.ret(DateTimeV2Type.SYSTEM_DEFAULT)
-                    .args(DateTimeV2Type.SYSTEM_DEFAULT, DateV2Type.INSTANCE),
             FunctionSignature.ret(DecimalV2Type.SYSTEM_DEFAULT)
                     .args(DecimalV2Type.SYSTEM_DEFAULT, DecimalV2Type.SYSTEM_DEFAULT),
             FunctionSignature.ret(BitmapType.INSTANCE).args(BitmapType.INSTANCE, BitmapType.INSTANCE),

regression-test/data/nereids_function_p0/scalar_function/G-K.out

@@ -730,6 +730,74 @@ C5A39BE173A03
 1451-12-23T13:04:45
 1451-12-23T13:04:45
 
+-- !sql --
+\N
+0931-12-19T13:04:45
+0974-08-27T07:04:45
+\N
+1423-02-06T03:04:45
+\N
+\N
+0901-01-12T23:04:45
+\N
+0983-08-14T07:04:45
+1318-09-12T01:04:45
+7553-03-18T15:04:45
+\N
+\N
+\N
+
+-- !sql --
+\N
+\N
+1143-08-16T07:04
+1411-12-23T13:04
+\N
+1141-01-14T23:04:45
+7633-03-18T15:04:45
+\N
+\N
+1454-08-31T07:04:45
+1478-09-13T01:04:45
+1823-02-09T03:04:45
+\N
+\N
+\N
+
+-- !sql --
+\N
+\N
+0473-02-06T14:00
+\N
+1906-08-31T18:00
+1930-09-13T12:00
+\N
+\N
+2143-02-04T10:00
+8635-04-09T02:00
+\N
+9331-08-13T18:00
+\N
+9999-12-21T00:00
+\N
+
+-- !sql --
+\N
+\N
+0473-02-06T14:00
+\N
+1906-08-31T18:00
+1930-09-13T12:00
+\N
+\N
+2143-02-04T10:00
+8635-04-09T02:00
+\N
+9331-08-13T18:00
+\N
+9999-12-21T00:00
+\N
+
 -- !sql --
 \N
 0
@@ -883,6 +951,74 @@ C5A39BE173A03
 0
 0
 
+-- !sql --
+\N
+0931-12-19T13:04:45
+0969-04-11T19:04:45
+\N
+0680-11-01T23:04:45
+\N
+\N
+1442-11-28T03:04:45
+\N
+1520-04-29T19:04:45
+1265-04-01T01:04:45
+\N
+\N
+\N
+\N
+
+-- !sql --
+\N
+\N
+1680-04-29T19:04
+1411-12-23T13:04
+\N
+1682-11-29T03:04:45
+\N
+\N
+\N
+1449-04-15T19:04:45
+1425-04-03T01:04:45
+1080-11-04T23:04:45
+\N
+\N
+\N
+
+-- !sql --
+\N
+\N
+\N
+\N
+1901-04-16T06:00
+1877-04-02T12:00
+\N
+\N
+2684-12-19T14:00
+\N
+\N
+9868-04-28T06:00
+\N
+9999-12-21T00:00
+\N
+
+-- !sql --
+\N
+\N
+\N
+\N
+1901-04-16T06:00
+1877-04-02T12:00
+\N
+\N
+2684-12-19T14:00
+\N
+\N
+9868-04-28T06:00
+\N
+9999-12-21T00:00
+\N
+
 -- !sql --
 Budg
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