用日期變量在PHP中進行Postgres查詢

Question

您能在下面的查詢中幫助我嗎？

PHP代碼：//

$countdate='2017-01-03';
$countsql='SELECT rucid,"databaseType","countLoggedOn","prodCount","nprodCount","countType" FROM "ru_countLog" WHERE "countLoggedOn"=$countdate';

->出現語法錯誤

“ $”或附近的語法錯誤LINE 1：... untType”來自“ ru_countLog”，而“ countLoggedOn” = $ countdate

Answer 1

從查詢中刪除內部雙引號：

$countsql = "SELECT rucid, databaseType, countLoggedOn,
             prodCount, nprodCount, countType
             FROM ru_countLog
             WHERE countLoggedOn = $countdate";

請注意，此查詢容易受到SQL注入的攻擊。 考慮參數化$countdate 。 使用http://php.net/manual/en/function.pg-query-params.php ，這將成為

$countsql = 'SELECT rucid, databaseType, countLoggedOn,
         prodCount, nprodCount, countType
         FROM ru_countLog
         WHERE countLoggedOn = $1';

$result = pg_query_params($dbconn, $countsql, array($countdate));

$dbconn是您的數據庫連接

Answer 2

也許你應該這樣嘗試

$countdate='2017-01-03';
$countsql='SELECT rucid,"databaseType","countLoggedOn","prodCount","nprodCount","countType" FROM "ru_countLog" WHERE "countLoggedOn"='.$countdate;

希望這個幫助