In rated PG movies, how many of them released in June 1990?
rated PG refers to MPAA Rating = 'PG'; released in June 1990 refers to Release Date BETWEEN '1990-06-01' and '1990-06-30'
SELECT COUNT(*) FROM movie WHERE `MPAA Rating` = 'PG' AND `Release Date` LIKE '1990-06%'
database name:db_id movie
actor table actor Cols: actor id dtype integer, Name dtype text, date of birth dtype date, birth city dtype text, birth country dtype text, height inches dtype integer, Biography dtype text, Gender dtype text, Ethnicity dtype text, NetWorth dtype text, 
movie table movie Cols: movie id dtype integer, Title dtype text, motion picture association of america rating dtype text, Budget dtype integer, Gross dtype integer, Release Date dtype text, Genre dtype text, Runtime dtype integer, Rating dtype real, rating count dtype integer, Summary dtype text, 
characters table characters Cols: movie id dtype integer, actor id dtype integer, character name dtype text, credit order dtype integer, pay dtype text, screentime dtype text, 
