如何從表中檢索多個記錄？

Question

我有一個表有數據。

id type 
1 max 
1 sam 
1 rom 
2 jak 

我要檢索的所有type其中id=1;

if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { 
      while(sqlite3_step(compiledStatement) == SQLITE_ROW) { 
       NSString *aRecord = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; 
       NSLog (@"%@",aRecord); 
      } 

這一說法retrive我只有最後一條記錄。我如何獲得所有記錄？

how to catch these records in the variable. I am using aRecord but it store only last record. So this is the main concern 

Answer 1

的SQL RO做到這一點很簡單：

select * from <table_name> where id = 1 

做這樣的事情：

NSMutableString *myRecords = [NSMutableString initWithString:@""]; 

if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { 
      while(sqlite3_step(compiledStatement) == SQLITE_ROW) { 
       NSString *aRecord = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)];   

       myRecords = [myRecords stringByAppendingString:[NSString stringWithFormat:@"%@ ",arecord]];     
       NSLog (@"%@",aRecord); 
       } 

正如彼得Hosey在評論中指出，這會給你一個字符串所有三個記錄都由空格分隔。您可能想要用這些記錄填充數組。