I am trying to map out school districts based on precinct numbers (which is present in both data sets that I am working with). The precinct numbers are contained in a different excel sheet that looks like this:

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input long precinct str36 name1
 50001 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50002 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50003 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50004 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50005 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50010 "LA CANADA UNIFIED SCHOOL"      
 50011 "LA CANADA UNIFIED SCHOOL"      
 50014 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50016 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50019 "LA CANADA UNIFIED SCHOOL"      
 50020 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50021 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50022 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50023 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50024 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50025 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50026 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50027 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50028 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50051 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50052 "LA CANADA UNIFIED SCHOOL"      
 50052 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50053 "LA CANADA UNIFIED SCHOOL"      
 50054 "LA CANADA UNIFIED SCHOOL"      
 50056 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50059 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50060 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50061 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50062 "ACTON-AGUA DULCE UNIF SCHOOL"  
 50063 "ACTON-AGUA DULCE UNIF SCHOOL"  
 70001 "LAS VIRGENES UNIFIED SCHOOL"    
 70002 "LAS VIRGENES UNIFIED SCHOOL"    
 70004 "LAS VIRGENES UNIFIED SCHOOL"    
 70006 "LAS VIRGENES UNIFIED SCHOOL"    
 70007 "LAS VIRGENES UNIFIED SCHOOL"    
 70008 "LAS VIRGENES UNIFIED SCHOOL"    
 70027 "LAS VIRGENES UNIFIED SCHOOL"    
 70040 "LAS VIRGENES UNIFIED SCHOOL"    
 70041 "LAS VIRGENES UNIFIED SCHOOL"    
 70041 "SANTA MONICA-MALIBU UNIF SCHOOL"
 70207 "LAS VIRGENES UNIFIED SCHOOL"    
 80001 "LAS VIRGENES UNIFIED SCHOOL"    
 80002 "LAS VIRGENES UNIFIED SCHOOL"    
 80003 "LAS VIRGENES UNIFIED SCHOOL"    
 80012 "LAS VIRGENES UNIFIED SCHOOL"    
 80021 "LAS VIRGENES UNIFIED SCHOOL"    
 80022 "LAS VIRGENES UNIFIED SCHOOL"    
 80025 "LAS VIRGENES UNIFIED SCHOOL"    
 80034 "LAS VIRGENES UNIFIED SCHOOL"    
 80038 "LAS VIRGENES UNIFIED SCHOOL"    
 80043 "LAS VIRGENES UNIFIED SCHOOL"    
 80047 "LAS VIRGENES UNIFIED SCHOOL"    
 80050 "LAS VIRGENES UNIFIED SCHOOL"    
 80051 "LAS VIRGENES UNIFIED SCHOOL"    
 80052 "LAS VIRGENES UNIFIED SCHOOL"    
 80053 "LAS VIRGENES UNIFIED SCHOOL"    
 80054 "LAS VIRGENES UNIFIED SCHOOL"    
 80070 "LAS VIRGENES UNIFIED SCHOOL"    
 80074 "LAS VIRGENES UNIFIED SCHOOL"    
 80075 "LAS VIRGENES UNIFIED SCHOOL"    
 90001 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90002 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90003 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90004 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90005 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90006 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90007 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90008 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90009 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90010 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90012 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90014 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90015 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90016 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90017 "ACTON-AGUA DULCE UNIF SCHOOL"  
 90018 "ACTON-AGUA DULCE UNIF SCHOOL"  
150001 "ALHAMBRA USD"                  
150001 "ALHAMBRA USD-1ST DISTRICT"      
150002 "ALHAMBRA USD"                  
150002 "ALHAMBRA USD-1ST DISTRICT"      
150003 "ALHAMBRA USD"                  
150003 "ALHAMBRA USD-1ST DISTRICT"      
150004 "ALHAMBRA USD-1ST DISTRICT"      
150004 "ALHAMBRA USD"                  
150005 "ALHAMBRA USD"                  
150005 "SAN GABRIEL UNIFIED SCHOOL"    
150005 "ALHAMBRA USD-2ND DISTRICT"      
150006 "ALHAMBRA USD-3RD DISTRICT"      
150006 "ALHAMBRA USD"                  
150007 "ALHAMBRA USD-1ST DISTRICT"      
150007 "ALHAMBRA USD"                  
150008 "ALHAMBRA USD-1ST DISTRICT"      
150008 "ALHAMBRA USD"                  
150009 "ALHAMBRA USD-1ST DISTRICT"      
150009 "ALHAMBRA USD"                  
150010 "ALHAMBRA USD-1ST DISTRICT"      
150010 "ALHAMBRA USD"                  
150010 "ALHAMBRA USD-2ND DISTRICT"      
150011 "ALHAMBRA USD"                  
150011 "ALHAMBRA USD-3RD DISTRICT"      
end
I have been trying to do this in a rather tedious way by running the following code for each district:

PHP Code:
inlist2 precinct, name(Acton_Laguna_Dulce) values(50028,50059,50001,50062,50024,50052,50062,50061,50001,50059,50004,50003,1770008,90004,1770008,50001,50005,90009,1770015,90003,50004,50004,6850010,50002,50028,50001,50005,50028,50014,50005,90004,50004,50022,90015,90003,50001,50001,50059,50016,90016,50063,50022,50016,50059,90003,50025,50062,50016,90003,90008,50004,50003,50004,6850010,90003,50025,50056,90018,50021,1770015,50022,50063,90003,90004,6850024,50001,1770008,50061,50004,50059,50001,90010,1770008,50059,50051,50060,50005,50001,90007,50003,90018,50027,50061,50059,90004,1770015,90003,5000014,50003,50003,50005,50016,50001,90005,90003,90004,90001,50024,90003,50016,90003,50001,5000014,50004,90003,90003,50026,50063,50025,90006,50059,50059,50063,50021,50002,50023,90016,90017,50002,50022,50021,5000014,90003,50003,50023,90002,50016,50001,50004,5000014,50059,50001,90003,50061,90010,5000014,50014,50005,90002,50059,6850031,50061,90014,6850032,90003,50063,50061,90002,90012,50014,50059,50016,50020,50002) 
While this works for districts that contain fewer precincts like the Acton-Laguna Dulce it does not work for bigger districts like Los Angeles since inlist2 stops reading the precinct numbers after a certain point, citing a syntax error and resulting in a lot of missing values. I have also tried merging the data set above with the main data set that I want to create the districts in but this has not worked either since precinct was not able to match the observations of the two datasets uniquely, resulting in an error. I am also adding a data example of the main dataset for your reference.

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input long(voter_id precinct)
  321 3450020
 1006 9000202
 1327 5150015
 1541 1940011
 1648 1000033
 1755 6220133
 1862 9000801
 2119 9000001
 2226  950003
 2547 5400047
 3339 7800006
 3981 9001312
 4024 5500109
 4131 1040020
 4559 3430010
 5565 1850040
 6143  750011
 6571 1770306
 6999  750043
 7149 6250029
 7898 1960005
 9161  950160
 9268 6250052
 9482 7750017
 9703 4800046
10112 6100015
10433 4050004
11118 2550073
11332 1500018
11439  750014
11974   50005
12231   50005
12445 5400048
12552 5400048
12980 9002416
13237 9005821
13344 9002160
13451 9000214
13879  950013
14457 9002248
14885   50016
14992 9000151
15891 1850033
15998 3330010
16255 2000012
16362 2040015
16897 6000009
17047  950161
17154 2700013
17261 4800023
17582 6000019
17689   50003
17796   50003
18267 7700154
18374 6700025
18702 2600108
18809 3550020
19922 9003988
20224 3650005
20759 9001563
21230   50016
21337   50016
21551 7700167
21765 3850376
22129 4800046
22343 3850246
22771 1070003
22878   50004
22985   50004
23242   70008
23456 3400014
23777 4800046
23991 1770001
24034 1040042
24462 9002107
24569 9000288
24676 1300021
24890 6220125
25254 9000549
25896 9001799
26153 3850366
26367 9000963
26795 3850212
26802  600007
26909   80052
27052 6600005
27915 6820009
28058 1030026
28379 3850104
28486   50062
28921 1040251
29492 5230041
29713 1450018
30015 1030049
30550 9002502
31128 9001257
32134 3300040
32669 9000357
32883 3450010
32990 5150004
end

Also, the ideal outcome would be for regions like Alhambra USD, Alhambra USD 2ND DISTRICT, ALHAMBRA USD-3RD DISTRICT and so on to be coded as one district (i.e. just Alhambra) but this is largely a secondary concern.

Does anyone have any thoughts on how to accomplish this?