Parameter to script tool gives Invalid expression ERROR 000358?

I have created python script tool in arcgis 10.1 as below.
I am trying to take input parameter and passing to select statement.

There is error when i execute this tool.

import arcpy

from arcpy import env

env.workspace = "Database Connectionssc_dev.sde"

name = arcpy.GetParameterAsText(0)

arcpy.SelectLayerByAttribute_management ("SC.STATES", "NEW_SELECTION", " "STATE_NAME" = name")

The error is Failed to execute….Invalid expression..ERROR 000358