In member void PostgresqlScriptExecutor.ExecuteCommandsWithinExceptionHandler(int index, SqlScript script, Action executeCommand), change parameter name executeCommand to executeCallback in order to match the identifier as it has been declared in void ScriptExecutor.ExecuteCommandsWithinExceptionHandler(int index, SqlScript script, Action executeCallback) (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1725)

Make 'Attention' a static property. (https://rules.sonarsource.com/csharp/RSPEC-2325)

Either log this exception and handle it, or rethrow it with some contextual information. (https://rules.sonarsource.com/csharp/RSPEC-2139)

Do not update the loop counter 'characterPosition' within the loop body. (https://rules.sonarsource.com/csharp/RSPEC-127)

Make 'FileExtentionIsExe' a static method. (https://rules.sonarsource.com/csharp/RSPEC-2325)

Make 'ExitCodeValid' a static method. (https://rules.sonarsource.com/csharp/RSPEC-2325)

Make 'EncodingExists' a static method. (https://rules.sonarsource.com/csharp/RSPEC-2325)

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

In member void PostgresqlScriptExecutor.ExecuteCommandsWithinExceptionHandler(int index, SqlScript script, Action executeCommand), change parameter name executeCommand to executeCallback in order to match the identifier as it has been declared in void ScriptExecutor.ExecuteCommandsWithinExceptionHandler(int index, SqlScript script, Action executeCallback) (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1725)