String sql = "select id,name,typename,health,love,to_char(birthday,'YYYY"-"MM"-"DD') from pet2 where owner_ID is null";中间To_char的双引号有歧义,直接编译报错有转义字符可以操作么?怎么弄?转义字符
String sql = "select id,name,typename,health,love,to_char(birthday,'YYYY"-"MM"-"DD') from pet2 where owner_ID is null";中间To_char的双引号有歧义,直接编译报错有转义字符可以操作么?怎么弄?转义字符
String sql = "select id,name,typename,health,love,to_char(birthday,'YYYY\"-\"MM\"-\"DD') from pet2 where owner_ID is null";