parameters: (sql_catalog, column=None)
docstring: Same as asSearchTextExpression, but also returns a boolean telling
        caller if returned value must be parenthesed.
        Returns a 2-tuple:
        - a boolean (True if returned string must be parenthesed)
        - a string (a SearchText expression)
docstring_summary: Same as asSearchTextExpression, but also returns a boolean telling
        caller if returned value must be parenthesed.
        Returns a 2-tuple:
        - a boolean (True if returned string must be parenthesed)
        - a string (a SearchText expression)
docstring_tokens: Same as asSearchTextExpression but also returns a boolean telling caller if returned value must be parenthesed . Returns a 2 - tuple : - a boolean ( True if returned string must be parenthesed ) - a string ( a SearchText expression )
function: def _asSearchTextExpression(sql_catalog, column=None):
      """
        Same as asSearchTextExpression, but also returns a boolean telling
        caller if returned value must be parenthesed.
        Returns a 2-tuple:
        - a boolean (True if returned string must be parenthesed)
        - a string (a SearchText expression)
      """
function_tokens: def _asSearchTextExpression ( sql_catalog , column = None ) :