INSERT语句后需要什么？

我有一个INSERT语句，后面跟着一个SQLITE3_EXEC，后面跟着一个SELECT语句和另一个SQLITE3_EXEC。我在SELECT语句的EXEC上得到了一个SQLERROR 21（SQLITE_MISUSE）。INSERT语句后需要什么？

我错过了两个EXEC之间的东西吗？像一个COMMIT，或？

21是否可能试图插入已存在的记录？

NSString *insertCommand = [NSString stringWithFormat:@"INSERT INTO CardData (CARD_ID, CARD_NAME, CODE_VAL) VALUES ('/%@', '/%@', '/%@')", 
           symbol.data, @"Test Card", symbol.typeName]; 

    sqlite3_exec(db, [insertCommand UTF8String], NULL, NULL, &errmsg); 
    if(errmsg != NULL) 
     NSLog(@"insert error: /%@", &errmsg); // DEBUGGING ONLY! 

    // now, pull it back out of the d/b and display the data 
    const char *sqlStatement = @"select CARD_ID, CARD_NAME, CODE_VAL from CardData"; 
    sqlite3_stmt *compiledStatement; 
    int err = sqlite3_prepare_v2(db, [sqlStatement UTF8String], -1, &compiledStatement, NULL); // Setup the SQL Statement and compile it for faster access 
if(err != SQLITE_OK) 
    NSLog(@"prepare error: /%@", err); 
    else { 
     // Loop through the results and add them to the feeds array 
     while(sqlite3_step(compiledStatement) == SQLITE_ROW) { 

      // Read the data from the result row 
     resultText.text = [NSString stringWithFormat:@"\nDatabase: \n%@ \n%@ \n%@", resultText.text, 
      [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)], 
      [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)], 
      [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]]; 
     } 
    sqlite3_finalize(compiledStatement); // release it... 
    sqlite3_close(db); 
    }

来源

2011-05-02 SpokaneDude

你为什么不提供你正试图执行的SQL语句？ – 2011-05-02 17:00:49

这里是... http://monobin.com/__d215dc84d – SpokaneDude 2011-05-02 17:09:20

伙计。在问题中发布相关文字。 – Joe 2011-05-02 17:20:35