@Override
    public char[] getCompletionProposalAutoActivationCharacters()
    {
        boolean useKeystrokes = editor.getActivePreferenceStore().getBoolean(SQLPreferenceConstants.ENABLE_KEYSTROKE_ACTIVATION);
        return useKeystrokes ? ".abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$".toCharArray() : new char[] {'.', };
    }
This method is incomplete in that it does not implement logic to produce
some context help relevant to SQL. It just hard codes two strings to
demonstrate the action

@see org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeContextInformation(ITextViewer,
     int)
plugins/org.jkiss.dbeaver.ui.editors.sql/src/org/jkiss/dbeaver/ui/editors/sql/syntax/SQLCompletionProcessor.java