How to fix Error 10133 on Windows Server 2025 / Windows 11

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Troubleshooting Guide: SQL Server Error 10133

Why This Error Happens

This error occurs because SQL Server does not allow the creation of indexed (schema-bound) views when the view references a function that performs data access, either to user tables or system catalogs. Indexed views require strict determinism and schema-binding guarantees, and any function marked with READS SQL DATA or EXTERNAL ACCESS violates this requirement because its output cannot be guaranteed to be deterministic across executions. This is commonly seen when a user-defined function (UDF) queries another table internally rather than relying solely on its input parameters.

Step-by-Step Resolution Guide

Step 1: Identify the Offending Function

  • Locate the specific function named in the error message (the %.*ls placeholder in the actual error text).
  • Run the following query to inspect the function’s definition and data access property:
  SELECT OBJECT_DEFINITION(OBJECT_ID('YourFunctionName'));
  SELECT is_schema_bound, data_access FROM sys.sql_modules WHERE object_id = OBJECT_ID('YourFunctionName');
  • Confirm if data_access is set to 1 (indicating data access), which is incompatible with indexed views.

Step 2: Refactor the Function to Remove Data Access

  • Modify the function to eliminate internal SELECT statements against user tables or system views.
  • If the function requires external data, pass the required values as input parameters instead of querying them internally.
  • Alternatively, convert the logic into a computed column on the base table (using a deterministic expression) rather than wrapping it in a view-dependent function.

Step 3: Remove Schema Binding Requirement (If Refactoring Isn’t Feasible)

  • If you only need a standard view (not an indexed/materialized view), remove the WITH SCHEMABINDING clause from the CREATE VIEW statement.
  • Navigate to SQL Server Management Studio (SSMS) 21, right-click the view under Databases > [YourDB] > Views, select Modify, and delete the SCHEMABINDING keyword from the script.
  • Execute the ALTER VIEW script to apply the change via SSMS or sqlcmd.

Step 4: Rebuild the Index (If Required)

  • If the view absolutely requires an index for performance reasons, ensure the function is replaced with inline logic directly within the view definition rather than a separate UDF call.
  • Re-run the CREATE UNIQUE CLUSTERED INDEX command on the view once the function dependency is removed.

Alternative or Verification Steps

  • Verify the fix by attempting to re-run the CREATE INDEX statement on the view; if it completes without Error 10133, the schema-binding conflict is resolved.
  • If modifying the function is not possible due to business logic constraints, consider using an Indexed View alternative such as a standard view combined with a scheduled job that populates a physical summary table (manual materialization) instead.