Answers for "where do i run a sql script"

execute sql script

sqlplus username/password@service	-- OR sqlplus / as sysdba
 SQL> SELECT sysdate FROM dual;
 SQL> @C:Usersfolderscript.sql
-- OR
 SQL> START C:Usersfolderscript.sql

how to run sql query

/*in Sql Server (SSMS)*/
/*Hightlight the statements you would like to execute*/
/*Then click on the green play button (somtimes with the word execute) or press F5*/