st: Merge Files one to many

[<theodroe@bellsouth.net>]

Have two data sets with common variable. The teacher data set has several
teachers per school. The school variable is a nominal variable that is
unique to each school. So if there are 20 teachers in a school the school
variable is repeated 20 times. The principal data file has one principal per
school and I want to merge/match on school. There is one principal to each
school and this file uses the same school variable to identify the school
the principal is in. What I need to do is to match the principal data to
every teacher in that school. 

So the file would look like:


School	teacher_var1	teacher_var2	principal_var1
123		23			45			56	
123		25			44			56
123		21			43			56
123		56			55			56
331		21			22			51
331		21			29			51
331		26			21			51

Help please
		

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