ConditionalType.EqualNull

Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs

@@ -208,6 +208,17 @@ namespace SqlSugar
                                 parameters.Add(new SugarParameter(parameterName, item.FieldValue));
                             }
                             break;
+                        case ConditionalType.EqualNull:
+                            if (GetFieldValue(item) == null)
+                            {
+                                builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "  IS ", " NULL ");
+                            }
+                            else
+                            {
+                                builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "=", parameterName);
+                                parameters.Add(new SugarParameter(parameterName, GetFieldValue(item)));
+                            }
+                            break;
                         default:
                             break;
                     }

Src/Asp.Net/SqlSugar/Enum/ConditionalType.cs

@@ -21,5 +21,6 @@ namespace SqlSugar
         IsNullOrEmpty=11,
         IsNot=12,
         NoLike = 13,
+        EqualNull = 14,
     }
 }