Summary of the changes

        - Generated SQL >> CREATE SEQUENCE wrong when using decimal
        was generating (18, 2) which SQL returned an error
        - Added tests for int, long, short, byte, decimal

Fixes #26562Summary of the changes

        - Generated SQL >> CREATE SEQUENCE wrong when using decimal
        was generating (18, 2) which SQL returned an error
        - Added tests for int, long, short, byte, decimal

Fixes #26562

src/EFCore.SqlServer/Migrations/SqlServerMigrationsSqlGenerator.cs

@@ -874,7 +874,7 @@ protected override void Generate(
 
                 builder
                     .Append(" AS ")
-                    .Append(typeMapping.StoreType);
+                    .Append(typeMapping.StoreTypeNameBase);
             }
 
             builder

test/EFCore.SqlServer.FunctionalTests/Migrations/MigrationsSqlServerTest.cs

@@ -1765,6 +1765,38 @@ public override async Task Create_sequence()
                 @"CREATE SEQUENCE [TestSequence] AS int START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE NO CYCLE;");
         }
 
+        [ConditionalFact]
+        public async Task Create_sequence_decimal()
+        {
+            await Test(
+                builder => { },
+                builder => builder.HasSequence<decimal>("TestSequence"),
+                model =>
+                {
+                    var sequence = Assert.Single(model.Sequences);
+                    Assert.Equal("TestSequence", sequence.Name);
+                });
+
+            AssertSql(
+                @"CREATE SEQUENCE [TestSequence] AS decimal START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE NO CYCLE;");
+        }
+
+        [ConditionalFact]
+        public async Task Create_sequence_long()
+        {
+            await Test(
+                builder => { },
+                builder => builder.HasSequence<long>("TestSequence"),
+                model =>
+                {
+                    var sequence = Assert.Single(model.Sequences);
+                    Assert.Equal("TestSequence", sequence.Name);
+                });
+
+            AssertSql(
+                @"CREATE SEQUENCE [TestSequence] START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE NO CYCLE;");
+        }
+
         public override async Task Create_sequence_all_settings()
         {
             await base.Create_sequence_all_settings();