split parkaliases transform into own file

sql/parkaliases.sql

@@ -0,0 +1,22 @@
+begin;
+attach database 'baseball-raw.db' as 'raw';
+
+create table if not exists "parkaliases" (
+	"parkID"	text,
+	"alias"	text
+);
+
+-- split aliases by semicolon
+with recursive aliases(parkid, alias) as (
+	select "park.key", "park.alias" from "raw"."parks"
+	union
+	select parkid, trim(substr(alias, instr(alias, ";") + 1)) as a
+	from aliases
+	where a != ''
+) insert into parkaliases
+select parkid, case instr(alias, ";")
+	when 0 then alias
+	else trim(substr(alias, 1, instr(alias, ";") - 1)) end as a
+from aliases
+where a != '';
+commit;

sql/parks.sql

@@ -1,25 +1,4 @@
 begin;
-attach database 'baseball-raw.db' as 'raw';
-
-create table if not exists "parkaliases" (
-	"parkID"	text,
-	"alias"	text
-);
-
--- split aliases by semicolon
-with recursive aliases(parkid, alias) as (
-	select "park.key", "park.alias" from "raw"."parks"
-	union
-	select parkid, trim(substr(alias, instr(alias, ";") + 1)) as a
-	from aliases
-	where a != ''
-) insert into parkaliases
-select parkid, case instr(alias, ";")
-	when 0 then alias
-	else trim(substr(alias, 1, instr(alias, ";") - 1)) end as a
-from aliases
-where a != '';
-
 alter table parks drop column "park.alias";
 
 -- insert some missing parks