java - SQL syntax error in "insert into 'keys'(a,b,c,d,e) values(?,?,?,?,?)" -

- 

    string requiredkeyword = request.getparameter("keyword");     string textbookcode = request.getparameter("bookcode");     string pagenumbers= request.getparameter("pagenumbers");     string definition = request.getparameter("definition");       printwriter show = response.getwriter();      try      {         class.forname("com.mysql.jdbc.driver");          connection dbconnection=drivermanager.getconnection("jdbc:mysql://localhost:3306/main_data","root","");         system.out.println(" connection created ");          preparedstatement prepst =(preparedstatement) dbconnection.preparestatement(" insert 'keys'(requiredkeyword,noofpages,textbookcode,pagenumbers,definition) values(?,?,?,?,?) ");         system.out.println(" statement prepared ");          int num=1,i=0;          prepst.setstring(1,requiredkeyword);         prepst.setint(2,num);         prepst.setstring(3,textbookcode);         prepst.setstring(4,pagenumbers);         prepst.setstring(5,definition);         try         {             i= prepst.executeupdate();             system.out.println(" executed ");         }         catch(exception e)         {             show.println(e);         }          if(i>0)             show.println(" inserted ");          dbconnection.close();      }     catch (exception e)      {         show.print(e);     } 
error : com.mysql.jdbc.exceptions.mysqlsyntaxerrorexception:  have error in sql syntax;  check manual corresponds mysql server version right syntax use near ''keys'(requiredkeyword,noofpages,textbookcode,pagenumbers,definition) values('da' @ line 1

you're using standard quotes instead of backticks escaping mysql reserved word keys. change table name non-reserved word quotes can removed.


Comments

Post a Comment

Popular posts from this blog

python - How to create jsonb index using GIN on SQLAlchemy? -

-
here's current code creating index jsonb. index("mytable_data_idx_id_key", mytable.data['id'].astext, postgresql_using='gin') but got error. sqlalchemy.exc.programmingerror: (psycopg2.programmingerror) data type text has no default operator class access method "gin" hint: must specify operator class index or define default operator class data type. [sql: "create index event_data_idx_id_key on event using gin ((data ->> 'id'))"] is there way create index on sqlalchemy? the postgresql specific sqlalchemy docs @ http://docs.sqlalchemy.org/en/latest/dialects/postgresql.html#operator-classes mention postgresql_ops dictionary provide "operator class" used postgresql, , provide example illustrating use: index('my_index', my_table.c.id, my_table.c.data, postgresql_ops={ 'data': 'text_pattern_ops', ...
Read more

PHP DOM loadHTML() method unusual warning -

-
i had following code works fine on localhost: $document = new domdocument(); $document->loadhtml($p_result); $form = $document->getelementsbytagname('form')->item(0); // code continues using $form variable after same code updated on outside server, loadhtml() failed , issued warning. warning: domdocument::loadhtml() expects parameter 1 valid path, string given in path/name/to/script.php returned null instead of object code pretty gets fatal error. note contents of $p_result absolutely same on outside server , on localhost. but why displays kind of warning , why not work? doesn't loadhtml() expects argument 1 string in first place? why method expects parameter 1 valid path ? just make clear i'm not calling loadhtmlfile() , i'm calling loadhtml() . thanks. you're affected one of php bugs . issue present in php 5.6.8 , 5.6.9. have affected php version on server, , bug-free version on localhost. the bug forbids null ...
Read more

c# - TransactionScope not rolling back although no complete() is called -

-
i'm using transactionscope rollback transaction fail bool errorreported = false; action<importerrorlog> newerrorcallback = e => { errorreported = true; errorcallback(e); }; using (var transaction = new transactionscope()) { foreach (importtaskdefinition task in taskdefinition) { loader.load(streamfile, newerrorcallback, task.destinationtable, processingtaskid); } if (!errorreported) transaction.complete(); } i'm sure there no transactionscope started ahead or after code. i'm using entity framework insert in db. regardless state of errorreported transaction never rolled in case of error. what missing ? transactionscope sets transaction.current . that's does. wants transacted must @ property. i believe ef each time connection opened reason. probably, connection open when scope installed. open connection inside of scope or enlist manually. ef has nasty "design decision": default opens ...
Read more