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Description

This error occurs when an attempt is made to execute dynamic SQL or DDL operations within an SAP HANA SQLScript procedure or function. SAP HANA often restricts dynamic SQL for security, performance, and predictability, ensuring stable system operations.

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Error Message

ERR_SQLSCRIPT_NOT_ALLOWED_DYNAMIC_SQL

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Known Causes

4 known causes

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Dynamic DDL/DML in Restricted Context

SQLScript procedures and functions often disallow dynamic DDL (e.g., CREATE TABLE) or DML (e.g., dynamic INSERT/UPDATE) for stability and security reasons.

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Forbidden EXECUTE IMMEDIATE Usage

The `EXEC` or `EXECUTE IMMEDIATE` commands are explicitly forbidden in specific SQLScript environments, such as read-only procedures or user-defined functions.

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Security Configuration Restrictions

SAP HANA database security settings or specific user roles might prevent dynamic SQL execution to maintain system integrity and prevent injection risks.

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Incorrect Development Pattern

The developer might be using dynamic SQL where a static, parameterized, or table-variable-based approach is the expected and safer method in SQLScript.

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Solutions

3 solutions available

1. Refactor SQLScript to Use Static SQL advanced

Convert dynamic SQL statements within SQLScript procedures to their static SQL equivalents.

1

Identify the SQLScript procedure causing the error. You can often find this by examining the application logs or debugging the relevant S/4HANA transaction.

2

Locate the dynamic SQL statement within the identified procedure. This typically involves the use of string concatenation to build SQL queries that are then executed using `EXECUTE IMMEDIATE` or similar constructs.

Example of dynamic SQL within an SQLScript procedure:

sql
DECLARE sql_stmt VARCHAR(1000);
sql_stmt := 'SELECT * FROM ' || table_name || ' WHERE id = ' || id_value;
EXECUTE IMMEDIATE sql_stmt INTO ...;

3

Rewrite the dynamic SQL statement using static SQL. This often involves replacing the dynamic table or column names with literal values or using conditional logic to select the appropriate static query. If the dynamic part is a column name, consider if a `CASE` statement can be used to select different static queries based on a parameter.

Example of refactored static SQL:

sql
IF table_name = 'TABLE_A' THEN
  SELECT * FROM TABLE_A WHERE id = id_value INTO ...;
ELSIF table_name = 'TABLE_B' THEN
  SELECT * FROM TABLE_B WHERE id = id_value INTO ...;
END IF;

4

Thoroughly test the modified SQLScript procedure to ensure it behaves as expected and resolves the `ERR_SQLSCRIPT_NOT_ALLOWED_DYNAMIC_SQL` error.

2. Utilize CDS Views for Data Selection medium

Leverage Core Data Services (CDS) views to abstract data selection logic, avoiding the need for dynamic SQL in ABAP or SQLScript.

1

Identify the business logic that relies on dynamic SQL. This might be in an ABAP report, function module, or an SQLScript procedure.

2

Determine if the required data can be accessed and manipulated through existing or custom CDS views. CDS views are powerful for defining data models and providing a static, well-defined interface for data access.

3

If a suitable CDS view doesn't exist, create a new CDS view that encapsulates the desired data selection. This view should be designed to be static and not rely on dynamic SQL for its definition.

Example of a simple CDS view:

sql
@AbapCatalog.sqlViewName: 'ZCDS_MYDATA'
@AbapCatalog.compiler.preserve_order: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: 'My Custom Data View'
define view ZCDS_MYDATA as select from some_table {
  key field1,
  field2,
  field3
};

4

Modify the calling ABAP code or SQLScript procedure to consume the data from the CDS view instead of using dynamic SQL.

Example of calling a CDS view from ABAP:

abap
SELECT * FROM ZCDS_MYDATA WHERE field1 = @some_value INTO TABLE @lt_data.

5

Test the changes to ensure data is retrieved correctly and the error is resolved.

3. Implement Parameterized Queries in ABAP medium

For ABAP-based applications, convert dynamic SQL to parameterized queries using Open SQL or native SQL with placeholders.

1

Identify the ABAP code that is constructing and executing dynamic SQL statements. This is often found in `EXEC SQL` blocks or when building SQL strings to be passed to database interfaces.

2

If using Open SQL, ensure that all variable parts of the query are replaced with placeholders (e.g., `WHERE col = @lv_value`).

Example of dynamic Open SQL (to be avoided):

abap
DATA: lv_sql TYPE string.
lv_sql = |SELECT * FROM my_table WHERE field1 = '{ lv_var1 }' AND field2 = '{ lv_var2 }'.|
EXECUTE IMMEDIATE lv_sql.


Example of parameterized Open SQL (preferred):

abap
SELECT * FROM my_table WHERE field1 = @lv_var1 AND field2 = @lv_var2 INTO TABLE @lt_result.

3

If using native SQL within ABAP (e.g., with `EXEC SQL ... ENDEXEC`), use placeholders (`?`) and pass the values separately to the `PREPARE` and `EXECUTE` statements.

Example of dynamic native SQL (to be avoided):

abap
EXEC SQL.
  SELECT * FROM my_table WHERE field1 = :lv_var1 AND field2 = :lv_var2
ENDEXEC.


Example of parameterized native SQL (preferred):

abap
EXEC SQL.
  PREPARE stmt FROM 'SELECT * FROM my_table WHERE field1 = ? AND field2 = ?'
ENDEXEC.

EXEC SQL.
  EXECUTE stmt USING :lv_var1, :lv_var2
ENDEXEC.

4

Compile and test the ABAP code to verify that the dynamic SQL is no longer being used and that data retrieval is correct.

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Related Errors

5 related errors

SAP S/4HANA Error 1344: SQLScript Dynamic SQL Restriction