使用查询按年份分开总计

Question

我有一个查询，显示客户订购的产品总数。我想展示2012年和2013年订购的产品数量。

这就是我得到的：

PRODUCT CODE PRODUCT NAME TOTAL
ABRX58        RED WHINE   1000
ABRX45        WHITE WINE  4000
ABRX32        CHAMPAGNE   3500

我想：

PRODUCT CODE PRODUCT NAME TOTAL 2012 TOTAL 2013
ABRX58        RED WHINE   500           500
ABRX45        WHITE WINE  2000          2000
ABRX32        CHAMPAGNE   1000          2500

我的查询：

 <?php
 foreach ($query=$db->query("SELECT
     t1.PRD_ID, t1.PRD_CODE, t1.PRD_CONT_ID, t1.PRD_COND_ID,  t1.PRD_LIBELLE
     t2.LGCM_ID, t2.LGCM_PRD_ID, t2.LGCM_CMD_ID, SUM(t2.LGCM_QTE_COMMANDE) AS SUM_LGCM_QTE_COMMANDE,
     t3.CMD_ID, t3.CMD_DATE, t3.CMD_CLT_ID
     FROM products t1
     INNER JOIN command_line t2
     ON t1.PRD_ID = t2.LGCM_PRD_ID
     INNER JOIN commands t3
     ON t2.LGCM_CMD_ID = t3.CMD_ID
     WHERE t3.CMD_CLT_ID = $cltId AND STR_TO_DATE(t3.CMD_DATE, '%d/%m/%Y') BETWEEN '".$datedeb."' AND '".$datefin."' GROUP BY t1.PRD_CODE") AS $donnees):
     ?>

我尝试使用SUM(CASE WHEN YEAR(STR_TO_DATE(t3.CMD_DATE, '%m/%d/%Y')) = 2012 THEN t2.LGCM_QTE_COMMANDE ELSE 0 END) AS SUM_LGCM_QTE_COMMANDE_2012这样的条件但它不起作用。