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whereClause syntax for Cost Distance parameter

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I am looking for create a sql expression regarding point feature class and selection based on 'Name' field to pass to arcpy.sa.CostDistance() param[0].

similar to:
Code:

savepath = env.workspace = r'G:\Xcel\Route Tool\Potter\Scratch.gdb'
weighted_Raster = r'G:\Xcel\Route Tool\Potter\Scratch.gdb\weighted_Raster'
fc = r'G:\Xcel\Route Tool\Potter\Data.gdb\Subs_w_dist'
Field = 'Name'
destValue = 'Coulter'
where_clause = createSQL(Field, destValue)


#Calculate the least accumulative cost distance for each cell to the nearest source over a cost surface.
outCostDist = arcpy.sa.CostDistance(where_clause, weighted_Raster,"", 'Output_Backlink')
outCostDist.save('distance_Raster')


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