Ignore case when comparing store types for set operation validation

src/EFCore.Relational/Query/SqlExpressions/SelectExpression.cs

@@ -2253,7 +2253,10 @@ private void ApplySetOperation(SetOperationType setOperationType, SelectExpressi
             var innerColumn2 = (SqlExpression)expression2;
             // For now, make sure that both sides output the same store type, otherwise the query may fail.
             // TODO: with #15586 we'll be able to also allow different store types which are implicitly convertible to one another.
-            if (innerColumn1.TypeMapping!.StoreType != innerColumn2.TypeMapping!.StoreType)
+            if (!string.Equals(
+                    innerColumn1.TypeMapping!.StoreType,
+                    innerColumn2.TypeMapping!.StoreType,
+                    StringComparison.OrdinalIgnoreCase))
             {
                 throw new InvalidOperationException(RelationalStrings.SetOperationsOnDifferentStoreTypes);
             }

test/EFCore.Specification.Tests/Query/NorthwindSetOperationsQueryTestBase.cs

@@ -318,7 +318,7 @@ public virtual Task Select_Union_unrelated(bool async)
         => AssertQuery(
             async,
             ss => ss.Set<Customer>()
-                .Select(c => c.ContactName)
+                .Select(c => c.CompanyName)
                 .Union(ss.Set<Product>().Select(p => p.ProductName))
                 .Where(x => x.StartsWith("C"))
                 .OrderBy(x => x),

test/EFCore.SqlServer.FunctionalTests/Query/FromSqlQuerySqlServerTest.cs

@@ -391,7 +391,7 @@ public override async Task<string> FromSqlRaw_queryable_with_parameters_and_clos
 
         AssertSql(
             @"p0='London' (Size = 4000)
-@__contactTitle_1='Sales Representative' (Size = 4000)
+@__contactTitle_1='Sales Representative' (Size = 30)
 
 SELECT [m].[CustomerID], [m].[Address], [m].[City], [m].[CompanyName], [m].[ContactName], [m].[ContactTitle], [m].[Country], [m].[Fax], [m].[Phone], [m].[PostalCode], [m].[Region]
 FROM (

test/EFCore.SqlServer.FunctionalTests/Query/NorthwindFunctionsQuerySqlServerTest.cs

@@ -197,7 +197,7 @@ public override async Task String_Contains_parameter_with_whitespace(bool async)
         await base.String_Contains_parameter_with_whitespace(async);
 
         AssertSql(
-            @"@__pattern_0='     ' (Size = 4000)
+            @"@__pattern_0='     ' (Size = 30)
 
 SELECT [c].[CustomerID], [c].[Address], [c].[City], [c].[CompanyName], [c].[ContactName], [c].[ContactTitle], [c].[Country], [c].[Fax], [c].[Phone], [c].[PostalCode], [c].[Region]
 FROM [Customers] AS [c]
@@ -1691,21 +1691,21 @@ public override async Task Indexof_with_one_constant_arg(bool async)
         AssertSql(
             @"SELECT [c].[CustomerID], [c].[Address], [c].[City], [c].[CompanyName], [c].[ContactName], [c].[ContactTitle], [c].[Country], [c].[Fax], [c].[Phone], [c].[PostalCode], [c].[Region]
 FROM [Customers] AS [c]
-WHERE (CAST(CHARINDEX(N'a', [c].[ContactName]) AS int) - 1) = 1");
+WHERE (CHARINDEX(N'a', [c].[ContactName]) - 1) = 1");
     }
 
     public override async Task Indexof_with_one_parameter_arg(bool async)
     {
         await base.Indexof_with_one_parameter_arg(async);
 
         AssertSql(
-            @"@__pattern_0='a' (Size = 4000)
+            @"@__pattern_0='a' (Size = 30)
 
 SELECT [c].[CustomerID], [c].[Address], [c].[City], [c].[CompanyName], [c].[ContactName], [c].[ContactTitle], [c].[Country], [c].[Fax], [c].[Phone], [c].[PostalCode], [c].[Region]
 FROM [Customers] AS [c]
 WHERE CASE
     WHEN @__pattern_0 = N'' THEN 0
-    ELSE CAST(CHARINDEX(@__pattern_0, [c].[ContactName]) AS int) - 1
+    ELSE CHARINDEX(@__pattern_0, [c].[ContactName]) - 1
 END = 1");
     }
 
@@ -1716,7 +1716,7 @@ public override async Task Indexof_with_constant_starting_position(bool async)
         AssertSql(
             @"SELECT [c].[CustomerID], [c].[Address], [c].[City], [c].[CompanyName], [c].[ContactName], [c].[ContactTitle], [c].[Country], [c].[Fax], [c].[Phone], [c].[PostalCode], [c].[Region]
 FROM [Customers] AS [c]
-WHERE (CAST(CHARINDEX(N'a', [c].[ContactName], 3) AS int) - 1) = 4");
+WHERE (CHARINDEX(N'a', [c].[ContactName], 3) - 1) = 4");
     }
 
     public override async Task Indexof_with_parameter_starting_position(bool async)
@@ -1728,7 +1728,7 @@ public override async Task Indexof_with_parameter_starting_position(bool async)
 
 SELECT [c].[CustomerID], [c].[Address], [c].[City], [c].[CompanyName], [c].[ContactName], [c].[ContactTitle], [c].[Country], [c].[Fax], [c].[Phone], [c].[PostalCode], [c].[Region]
 FROM [Customers] AS [c]
-WHERE (CAST(CHARINDEX(N'a', [c].[ContactName], @__start_0 + 1) AS int) - 1) = 4");
+WHERE (CHARINDEX(N'a', [c].[ContactName], @__start_0 + 1) - 1) = 4");
     }
 
     public override async Task Replace_with_emptystring(bool async)
@@ -1830,7 +1830,7 @@ public override async Task Substring_with_two_args_with_Index_of(bool async)
         await base.Substring_with_two_args_with_Index_of(async);
 
         AssertSql(
-            @"SELECT SUBSTRING([c].[ContactName], (CAST(CHARINDEX(N'a', [c].[ContactName]) AS int) - 1) + 1, 3)
+            @"SELECT SUBSTRING([c].[ContactName], (CHARINDEX(N'a', [c].[ContactName]) - 1) + 1, 3)
 FROM [Customers] AS [c]
 WHERE [c].[CustomerID] = N'ALFKI'");
     }