add IF NOT EXISTS condition for masato-5.sql
add IF NOT EXISTS condition for masato-5.sql

Cepave/open-falcon-backend,masato25/open-falcon-backend,masato25/open-falcon-backend,Cepave/open-falcon-backend,masato25/open-falcon-backend,Cepave/open-falcon-backend,minimum-hsu/scripts,minimum-hsu/scripts,Cepave/open-falcon-backend,masato25/open-falcon-backend,masato25/open-falcon-backend,Cepave/scripts,Cepave/open-falcon-backend,Cepave/scripts,Cepave/open-falcon-backend,masato25/open-falcon-backend