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我需要删除键中包含特定字符串的数据库条目。SQLite LIKE语句和转义字符
在逃跑前的SearchString在:
EntityCollection(Id='INST_PAT_ID%200100010050057716')
逃离代码:
后逃逸logger.debug("wildCard: " + wildCard);
String escapedString = wildCard.replace("%", "\\%");
String escapedString2 = escapedString.replace("'", "\\'");
String escapedString3 = escapedString2.replace("_", "\\_");
logger.debug("escapedString3: " + escapedString3);
的SearchString在:
EntityCollection(Id=\''INST\_PAT\_ID\%200100010050057716\'')%'' {escape '\'}' in key.
的SQL语句看起来是这样的。
final String where = "key LIKE ?";
final String[] args = new String[] { DatabaseUtils.sqlEscapeString("'%" + escapedString3 + "%'" + " {escape '\\'}") };
int success = database.delete(CacheDatabaseHelper.DATABASE_TABLE, where, args);
logger.debug("Delete attempt affected " + success + " lines!");
logger.debug("Deleted all cache entries from database containing: " + args[0] + " in key.");
但是我不能得到它的工作,因为它会产生错误的SQL语句。
int success = database.delete(CacheDatabaseHelper.DATABASE_TABLE,“KEY LIKE?”,new String [] {wildCard}); \t \t logger.debug(“Delete attempt affected”+ success +“lines!”); EntityCollection(Id ='INST_PAT_ID%200100010050057716') - 删除尝试影响了0行! – Kay