列字段列表「NID」是Drupal6

Question

曖昧查詢

我試圖創建一個顯示內容的塊，但我得到這個錯誤：

user warning: Column 'nid' in field list is ambiguous query: SELECT nid, title FROM node nd LEFT JOIN content_type_efemerides cte ON (nd.nid = cte.nid) WHERE type = '0' AND field_efemerides_fecha_value = '1' in D:\Webserver\htdocs\intranet\sites\all\modules\efemerides_form\efemerides_form.module on line 12. 

線12有這樣的代碼：

8 $today = getdate(); 
9 $type = "efemerides"; 
10 
11 $query = "SELECT nid, title FROM {node} nd LEFT JOIN {content_type_efemerides} cte ON (nd.nid = cte.nid) WHERE type = '%d' AND field_efemerides_fecha_value = '%d'"; 
12 $query_result = db_query($query, $type, $today); 

Answer 1

的在你的SELECT語句nid是模糊的（如錯誤消息狀態），你只需要使用一個表的別名來限定它：

$query = "SELECT nd.nid, nd.title FROM {node} nd LEFT JOIN {content_type_efemerides} cte ON (nd.nid = cte.nid) WHERE type = '%s' AND field_efemerides_fecha_value = '%s'"; 

而且字符串替換，都應使用%s代替%d（%d是針對小數）