Put strin enum column back in string

Author: PhenX-Pro

src/PhenX.EntityFrameworkCore.BulkInsert.Oracle/OracleDialectBuilder.cs

@@ -18,22 +18,7 @@ internal class OracleDialectBuilder : SqlDialectBuilder
 
     public override string CreateTableCopySql(string tempTableName, TableMetadata tableInfo, IReadOnlyList<ColumnMetadata> columns)
     {
-        var q = new StringBuilder();
-        q.Append($"CREATE TABLE {tempTableName} (");
-
-        foreach (var column in columns)
-        {
-            q.Append($"{column.QuotedColumName} {column.StoreDefinition}");
-            if (column != columns[^1])
-            {
-                q.Append(',');
-            }
-            q.AppendLine();
-        }
-
-        q.AppendLine(")");
-
-        return q.ToString();
+        return CreateTableCopySqlBase(tempTableName, columns);
     }
 
     public override string BuildMoveDataSql<T>(

src/PhenX.EntityFrameworkCore.BulkInsert.SqlServer/SqlServerDialectBuilder.cs

@@ -18,22 +18,7 @@ internal class SqlServerDialectBuilder : SqlDialectBuilder
 
     public override string CreateTableCopySql(string tempTableName, TableMetadata tableInfo, IReadOnlyList<ColumnMetadata> columns)
     {
-        var q = new StringBuilder();
-        q.Append($"CREATE TABLE {tempTableName} (");
-
-        foreach (var column in columns)
-        {
-            q.Append($"{column.QuotedColumName} {column.StoreDefinition}");
-            if (column != columns[^1])
-            {
-                q.Append(',');
-            }
-            q.AppendLine();
-        }
-
-        q.AppendLine(")");
-
-        return q.ToString();
+        return CreateTableCopySqlBase(tempTableName, columns);
     }
 
     protected override string Trim(string lhs) => $"TRIM({lhs})";

src/PhenX.EntityFrameworkCore.BulkInsert/Dialect/SqlDialectBuilder.cs

@@ -29,6 +29,17 @@ internal abstract class SqlDialectBuilder
     /// </summary>
     protected virtual bool SupportsInsertIntoAlias => true;
 
+    protected static string CreateTableCopySqlBase(string tempTableName, IReadOnlyList<ColumnMetadata> columns)
+    {
+        var q = new StringBuilder();
+
+        q.Append($"CREATE TABLE {tempTableName} (");
+        q.AppendJoin(",", columns, (sb, column) => sb.AppendLine($"{column.QuotedColumName} {column.StoreDefinition}"));
+        q.AppendLine(")");
+
+        return q.ToString();
+    }
+
     public abstract string CreateTableCopySql(string tempNameName, TableMetadata tableInfo, IReadOnlyList<ColumnMetadata> columns);
 
     /// <summary>

tests/PhenX.EntityFrameworkCore.BulkInsert.Tests/DbContext/TestDbContext.cs

@@ -38,6 +38,11 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             b.Property(x => x.Json).AsJsonString("jsonb");
         });
+
+        modelBuilder.Entity<TestEntity>(b =>
+        {
+            b.Property(x => x.StringEnumValue).HasColumnType("text");
+        });
     }
 }
 
@@ -51,6 +56,11 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             b.Property(x => x.Json).AsJsonString("json");
         });
+
+        modelBuilder.Entity<TestEntity>(b =>
+        {
+            b.Property(x => x.StringEnumValue).HasColumnType("text");
+        });
     }
 }
 
@@ -64,6 +74,11 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             b.Property(x => x.Json).AsJsonString(null);
         });
+
+        modelBuilder.Entity<TestEntity>(b =>
+        {
+            b.Property(x => x.StringEnumValue).HasColumnType("text");
+        });
     }
 }
 
@@ -77,6 +92,11 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             b.Property(x => x.Json).AsJsonString(null);
         });
+
+        modelBuilder.Entity<TestEntity>(b =>
+        {
+            b.Property(x => x.StringEnumValue).HasColumnType("text");
+        });
     }
 }
 
@@ -90,6 +110,11 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             b.Property(x => x.Json).AsJsonString(null);
         });
+
+        modelBuilder.Entity<TestEntity>(b =>
+        {
+            b.Property(x => x.StringEnumValue).HasColumnType("nvarchar2(255)");
+        });
     }
 }