- 修复 Oracle InsertOrUpdate Bug；#2047

2881099 · 2881099 · commit 3dc60d818ec7 · 2025-07-30T14:40:27.000+08:00
diff --git a/FreeSql/Internal/CommonProvider/InsertOrUpdateProvider.cs b/FreeSql/Internal/CommonProvider/InsertOrUpdateProvider.cs
@@ -303,6 +303,11 @@ public void WriteSourceSelectUnionAll(List<T1> source, StringBuilder sb, List<Db
                             {
                                 switch (_orm.Ado.DataType)
                                 {
+                                    case DataType.Oracle:
+                                    case DataType.OdbcOracle:
+                                    case DataType.CustomOracle:
+                                    case DataType.Dameng:
+                                        break; // Oracle 不支持 cast(null as xxx)，直接用 NULL
                                     case DataType.MsAccess:
                                     case DataType.Odbc:
                                     case DataType.Custom:
@@ -313,10 +318,7 @@ public void WriteSourceSelectUnionAll(List<T1> source, StringBuilder sb, List<Db
                                     case DataType.KingbaseES:
                                     case DataType.ShenTong:
                                         valsql = $"NULL::{_orm.CodeFirst.GetDbInfo(col.Attribute.MapType)?.dbtype}";
-                                        break;
-                                    default:
-                                        valsql = $"cast(NULL as {_orm.CodeFirst.GetDbInfo(col.Attribute.MapType)?.dbtype})";
-                                        break;
+                                        break; // #2047
                                 }
                             }
                         }

Original file line number	Diff line number	Diff line change
`@@ -303,6 +303,11 @@ public void WriteSourceSelectUnionAll(List<T1> source, StringBuilder sb, List<Db`
`303`	`303`	`{`
`304`	`304`	`switch (_orm.Ado.DataType)`
`305`	`305`	`{`
	`306`	`+ case DataType.Oracle:`
	`307`	`+ case DataType.OdbcOracle:`
	`308`	`+ case DataType.CustomOracle:`
	`309`	`+ case DataType.Dameng:`
	`310`	`+ break; // Oracle 不支持 cast(null as xxx)，直接用 NULL`
`306`	`311`	`case DataType.MsAccess:`
`307`	`312`	`case DataType.Odbc:`
`308`	`313`	`case DataType.Custom:`
`@@ -313,10 +318,7 @@ public void WriteSourceSelectUnionAll(List<T1> source, StringBuilder sb, List<Db`
`313`	`318`	`case DataType.KingbaseES:`
`314`	`319`	`case DataType.ShenTong:`
`315`	`320`	`valsql = $"NULL::{_orm.CodeFirst.GetDbInfo(col.Attribute.MapType)?.dbtype}";`
`316`		`- break;`
`317`		`- default:`
`318`		`- valsql = $"cast(NULL as {_orm.CodeFirst.GetDbInfo(col.Attribute.MapType)?.dbtype})";`
`319`		`- break;`
	`321`	`+ break; // #2047`
`320`	`322`	`}`
`321`	`323`	`}`
`322`	`324`	`}`