iphone - Data fetch from database -

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i stored information in server. used json fetching data. data fetch , store device database , fetch it. problem have set images in cat_id=1 & set images in cat_id=2. im using different array different set of images const char *sql = "select id,cat_id,product_image product cat_id = '1'";, const char *sql = "select id,cat_id,product_image product cat_id = '2'";. if use "%@" displays values.

code:

first set of images:

if (sqlite3_open([path utf8string], &database) == sqlite_ok) {   const char *sql = "select id,cat_id,product_image product cat_id = '1'";   nslog(@"sql %s",sql);   sqlite3_stmt *statement;  // int catid = 0;  if (sqlite3_prepare_v2(database, sql, -1, &statement, null) == sqlite_ok) {  // "step" through results - once each row.  while (sqlite3_step(statement) == sqlite_row) {    catname = [[nsstring alloc] initwithutf8string:  (const char *) sqlite3_column_text(statement, 2)];  nslog(@"catname %@",catname);   [marray addobject:catname];  [catname release];   // catid = sqlite3_column_int(statement, 0);  }  }    sqlite3_finalize(statement);  }   else {  sqlite3_close(database);  nsassert1(0, @"failed open database message '%s'.", sqlite3_errmsg(database));  // additional error handling, appropriate...  }

second set of images:

if (sqlite3_open([path utf8string], &database) == sqlite_ok) {   const char *sql = "select id,cat_id,product_image product cat_id = '2'";    nslog(@"sql %s",sql);   sqlite3_stmt *statement;  // int catid = 0;  if (sqlite3_prepare_v2(database, sql, -1, &statement, null) == sqlite_ok) {  // "step" through results - once each row.  while (sqlite3_step(statement) == sqlite_row) {    tabname = [[nsstring alloc] initwithutf8string:  (const char *) sqlite3_column_text(statement, 2)];  nslog(@"tabname %@",tabname);   [tabarray addobject:tabname];  [tabname release];   // catid = sqlite3_column_int(statement, 0);  }  }  sqlite3_finalize(statement);  }   else {  sqlite3_close(database);  nsassert1(0, @"failed open database message '%s'.", sqlite3_errmsg(database));  // additional error handling, appropriate...  }

}

im using actionsheet button click display array of datas:

-(void)actionsheetclickedbuttonatindex:(int)buttonindex {       if (buttonindex == 0) {         nslog(@"button");    (int = 0; i<[marray count]; i++ ) {                 nslog(@"index %d",i);                  //  imgview1=[[uibutton alloc]initwithframe:cgrectmake(20+(i*74), 500, 72, 72)];                  imgview1=[[uibutton alloc]initwithframe:cgrectmake(20+(i*74), 0, 72, 72)];                  width = width + 20+(i*74);                  [imgview1 settag:i+1];                  [imgview1 addtarget:self action:@selector(arraysofsclicked:) forcontrolevents:uicontroleventtouchupinside];                  [imgview1 setimage:((mysof *)[marray objectatindex:i]).photo forstate:uicontrolstatenormal];                  [scrollview addsubview:imgview1];                //  [myscroll addsubview:imgview1];                }         } else if (buttonindex == 1) {          nslog(@"button 1");    (int = 0; i<[tabarray count]; i++ ) {                 nslog(@"index %d",i);                  //  imgview1=[[uibutton alloc]initwithframe:cgrectmake(20+(i*74), 500, 72, 72)];                  imgview1=[[uibutton alloc]initwithframe:cgrectmake(20+(i*74), 0, 72, 72)];                  width = width + 20+(i*74);                  [imgview1 settag:i+1];                  [imgview1 addtarget:self action:@selector(arraysofsclicked:) forcontrolevents:uicontroleventtouchupinside];                  [imgview1 setimage:((mysof *)[tabarray  objectatindex:i]).photo forstate:uicontrolstatenormal];                  [scrollview addsubview:imgview1];                //  [myscroll addsubview:imgview1];                }       } else if (buttonindex == 2) {             nslog(@"button 2");      } else if (buttonindex == 3) {      } }

here don't want use cat_id=1 & cat_id=2. need pass parameter value increament automatically , values table. because if change cat_id increasing.

you can change properties of cat_id not auto increment. also, auto increment should triggered when insert new row table.

it seems cat_id foreign key other table describing product category. use update table syntax change record (e.g. new image), leaving cat_id unchanged.

if user changes category of product, set new cat_id.

in sqlite substitute variables ? , sqlite_bind_* function: 

const *char sql = "select id, cat_id, product_image product "                   "where cat_id = ?"; ... if (sqlite3_prepare_v2(database, sql, -1, &statement, null) == sqlite_ok) {    if (sqlite3_bind_int(sql, 1, yourcatid) == sqlite_ok) {        // iterate through results sqlite3_step    } }

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