Android Sqlite数据库中判断某个表是不是存在的SQL语句

Android Sqlite数据库中判断某个表是否存在的SQL语句

select count(*) as isExsit from sqlite_master where type="table" and name=表名;

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例如：

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select count(*) as isExsit from sqlite_master where type="table" and name="categories";

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