how to find out sql or datasource for dynamic dw?

I have dw syntax exported like:

"?$PBExportHeader$d_mydw.srd

release 11.5;

datawindow(units=0 timer_interval=0 color=16777215 brushmode=0 transparency=0 gradient.angle=0 gradient.color=8421504 gradient.focus=0 gradient.repetition.count=0 gradient.repetition.length=100 gradient.repetition.mode=0 gradient.scale=100 gradient.spread=100 gradient.transparency=0 picture.blur=0 picture.clip.bottom=0 picture.clip.left=0 picture.clip.right=0 picture.clip.top=0 picture.mode=0 picture.scale.x=100 picture.scale.y=100 picture.transparency=0 processing=0 HTMLDW=no print.printername="""" print.documentname="""" print.orientation = 0 print.margin.left = 110 print.margin.right = 110 print.margin.top = 96 print.margin.bottom = 96 print.paper.source = 0 print.paper.size = 0 print.canusedefaultprinter=yes print.prompt=no print.buttons=no print.preview.buttons=no print.cliptext=no print.overrideprintjob=no print.collate=yes print.background=no print.preview.background=no print.preview.outline=yes hidegrayline=no showbackcoloronxp=no picture.file="""" )

header(height=320 color=""536870912"" transparency=""0"" gradient.color=""8421504"" gradient.transparency=""0"" gradient.angle=""0"" brushmode=""0"" gradient.repetition.mode=""0"" gradient.repetition.count=""0"" gradient.repetition.length=""100"" gradient.focus=""0"" gradient.scale=""100"" gradient.spread=""100"" )

summary(height=64 color=""536870912"" transparency=""0"" gradient.color=""8421504"" gradient.transparency=""0"" gradient.angle=""0"" brushmode=""0"" gradient.repetition.mode=""0"" gradient.repetition.count=""0"" gradient.repetition.length=""100"" gradient.focus=""0"" gradient.scale=""100"" gradient.spread=""100"" )

footer(height=0 color=""536870912"" transparency=""0"" gradient.color=""8421504"" gradient.transparency=""0"" gradient.angle=""0"" brushmode=""0"" gradient.repetition.mode=""0"" gradient.repetition.count=""0"" gradient.repetition.length=""100"" gradient.focus=""0"" gradient.scale=""100"" gradient.spread=""100"" )

detail(height=84 color=""536870912"" transparency=""0"" gradient.color=""8421504"" gradient.transparency=""0"" gradient.angle=""0"" brushmode=""0"

then use datawindow.Create(ls_Syntax,ls_Error) to create dw dynamically. but where to find out the SQL or SP for this datawindw?