怎么在Mybatis中利用 if语句判断条件是否等于一个数字

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在Mybatis中 mapper中

boolean updateRegisterCompanyFlag(@Param(value = "companyId") String companyId,

@Param(value = "flag") String flag);

传入的flag类型为String，但在mapper.XML中进行判断是下意识地以为判断的值要加上引号

 <if test=" '4' == flag ">
  , LAST_CHECK_TIME = sysdate
 </if>

但是这样写，传入flag=“4”后，这个if语句一直不成立s

ql没有拼接。后来网上查了一番后将 test 中的 4 的引号去除才成功。

 <if test=" 4 == flag ">
 , LAST_CHECK_TIME = sysdate
 </if>

记录一下，以防忘记。。。

补充知识：Mybatis中xml的有关if test以及==的用法

Mybatis中，通常都要在mapper.xml中写复杂的sql语句，结合页面的查询筛选条件，需要在sql语句中加入

<if test=""></if>等的判断。而这test 后面的字段也是来自jsp或者html页面，但是不是随便书写的。

与页面都要一一对应，除此之外，还需要在实体类中有定义。

另外，mybatis中 <if test=>等于的条件怎么写？

注意 仅仅需要将双引号和单引号的位置换一下即可!!!

<sql id="queryData">
	select '集团' src_dbct_cd,
	substr(stats_mo,1,4) year,
	substr(stats_mo,5,6) month,
	sum(all_zb_cars) all_zb_cars,sum(all_kb_cars) all_kb_cars,sum(all_wd_cars) all_wd_cars,
	sum(all_zb_cars+all_kb_cars+all_wd_cars) all_cars_total,
	sum(round(all_zb_exp/10000,2)) all_zb_exp,sum(round(all_kb_exp/10000,2))
	all_kb_exp,sum(round(all_wd_exp/10000,2)) all_wd_exp,
	sum(round(all_zb_exp/10000+all_kb_exp/10000+all_wd_exp/10000,2))
	all_exp_total,
	sum(zb_cars) zb_cars,sum(kb_cars) kb_cars,
	sum(zb_cars+kb_cars) cars_total,
	sum(round(zb_net_wgt/10000000,2)) zb_net_wgt,sum(round(kb_net_wgt/10000000,2)) kb_net_wgt,
	sum(round(ifnull(zb_net_wgt/10000000,0)+ifnull(kb_net_wgt/10000000,0),2))
	wgt_total,
	sum(round(zb_exp/10000,2)) zb_exp,sum(round(kb_exp/10000,2)) kb_exp,
	sum(round(zb_exp/10000+kb_exp/10000,2)) exp_total,
	sum(zb_lod_mnt) zb_lod_mnt,sum(kb_lod_mnt) kb_lod_mnt,
	sum(ifnull(zb_lod_mnt,0)+ifnull(kb_lod_mnt,0)) lod_mnt_total,
	sum(zb_wait_mnt) zb_wait_mnt,sum(kb_wait_mnt) kb_wait_mnt,
	sum(ifnull(zb_wait_mnt,0)+ifnull(kb_wait_mnt,0)) wait_mnt_total,
	concat(round(sum(zb_dlyd_cars/zb_cars)*100,2),'%') zb_dlyd_pt,
	concat(round(sum(kb_dlyd_cars/kb_cars)*100,2),'%') kb_dlyd_pt,
	concat(round(sum(ifnull(zb_dlyd_cars/zb_cars,0)+ifnull(kb_dlyd_cars/kb_cars,0))*100,2),'%')
	dlyd_pt_total,
	concat(round(sum(zb_frqc_dlyd_cars/zb_cars)*100,2),'%') zb_frqc_dlyd,
	concat(round(sum(kb_frqc_dlyd_cars/kb_cars)*100,2),'%') kb_frqc_dlyd,
	concat(round(sum(ifnull(zb_frqc_dlyd_cars/zb_cars,0)+ifnull(kb_frqc_dlyd_cars/kb_cars,0))*100,2),'%')
	frqc_dlyd_total,
	sum(zb_dlyd_mnt) zb_dlyd_mnt,sum(kb_dlyd_mnt) kb_dlyd_mnt,
	sum(ifnull(zb_dlyd_mnt,0)+ifnull(kb_dlyd_mnt,0)) dlyd_mnt_total,
	round(ifnull(sum(zb_sys_mlg)/sum(zb_stip_mnt),0),2) zb_stip_speed,
	round(ifnull(sum(kb_sys_mlg)/sum(kb_stip_mnt),0),2) kb_stip_speed,
	(round(ifnull(sum(zb_sys_mlg)/sum(zb_stip_mnt),0)+ifnull(sum(kb_sys_mlg)/sum(kb_stip_mnt),0),2))
	stip_speed_total,
	round(ifnull(sum(zb_est_mlg)/sum(zb_actl_mnt),0),2) zb_actl_speed,
	round(ifnull(sum(kb_est_mlg)/sum(kb_actl_mnt),0),2) kb_actl_speed,
	(round(ifnull(sum(zb_est_mlg)/sum(zb_actl_mnt),0)+ifnull(sum(kb_est_mlg)/sum(kb_actl_mnt),0),2))
	actl_speed_total,
	sum(round(zb_pnlt/10000,2)) zb_pnlt,sum(round(kb_pnlt/10000,2)) kb_pnlt,
	sum(ifnull(round(zb_pnlt/10000,2),0)+ifnull(round(kb_pnlt/10000,2),0))
	pnlt_total,
	sum(zb_uld_wait_mnt) zb_uld_wait_mnt,sum(kb_uld_wait_mnt) kb_uld_wait_mnt,sum(wd_uld_wait_mnt) wd_uld_wait_mnt,
	round((ifnull(sum(zb_uld_wait_mnt),0)+ifnull(sum(kb_uld_wait_mnt),0)+ifnull(sum(wd_uld_wait_mnt),0))/
	(ifnull(sum(all_zb_cars),0)+ifnull(sum(all_kb_cars),0)+ifnull(sum(all_wd_cars),0)),2)
	uld_wait_mnt_total,
	sum(zb_uld_mnt) zb_uld_mnt,sum(kb_uld_mnt) kb_uld_mnt,sum(wd_uld_mnt) wd_uld_mnt,
	sum(ifnull(zb_uld_mnt,0)+ifnull(kb_uld_mnt,0)+ifnull(wd_uld_mnt,0)) uld_mnt_total,
	concat(round(sum(zb_brk_cars/zb_mlg/10000)*100,2),'%') zb_brk_cars,
	concat(round(sum(kb_brk_cars/kb_mlg/10000)*100,2),'%') kb_brk_cars,
	concat(round(sum(wd_brk_cars/wd_mlg/10000)*100,2),'%') wd_brk_cars,
	concat((round(sum(ifnull(zb_brk_cars/zb_mlg/10000,0)+ifnull(kb_brk_cars/kb_mlg/10000,0)+ifnull(wd_brk_cars/wd_mlg/10000,0))*100,2)),'%')
	brk_cars_total,
	concat(round(sum(zb_accdt_cars/zb_mlg/10000)*100,2),'%') zb_accdt_cars,
	concat(round(sum(kb_accdt_cars/kb_mlg/10000)*100,2),'%') kb_accdt_cars,
	concat(round(sum(wd_accdt_cars/wd_mlg/10000)*100,2),'%') wd_accdt_cars,
	concat((round(sum(ifnull(zb_accdt_cars/zb_mlg/10000,0)+ifnull(kb_accdt_cars/kb_mlg/10000,0)+ifnull(wd_accdt_cars/wd_mlg/10000,0))*100,2)),'%')
	accdt_cars_total,
	concat(round(sum(actl_tms/stip_tms)*100,2),'%') tms_total
	from bdrpt.kd_car_trans_mont_stats
	where 1=1
	<if test="stats_mo != null and stats_mo != ''" >
	and concat(SUBSTR(stats_mo,1,4),'-',SUBSTR(stats_mo,5,6))=#{stats_mo}
	</if> 
	<if test='SRC_DBCT_CD == "2"'>
	and src_dbct_cd = '分拨'
	</if>
	GROUP BY substr(stats_mo,5,6) 
	UNION 
	select l.location_name src_dbct_cd,
	substr(stats_mo,1,4) year,
	substr(stats_mo,5,6) month,
	all_zb_cars,all_kb_cars,all_wd_cars,
	(all_zb_cars+all_kb_cars+all_wd_cars) all_cars_total,
	round(all_zb_exp/10000,2) all_zb_exp,round(all_kb_exp/10000,2)
	all_kb_exp,round(all_wd_exp/10000,2) all_wd_exp,
	round(all_zb_exp/10000+all_kb_exp/10000+all_wd_exp/10000,2)
	all_exp_total,
	zb_cars,kb_cars,
	(zb_cars+kb_cars) cars_total,
	round(zb_net_wgt/10000000,2) zb_net_wgt,round(kb_net_wgt/10000000,2) kb_net_wgt,
	round(ifnull(zb_net_wgt/10000000,0)+ifnull(kb_net_wgt/10000000,0),2)
	wgt_total,
	round(zb_exp/10000,2) zb_exp,round(kb_exp/10000,2) kb_exp,
	round(zb_exp/10000+kb_exp/10000,2) exp_total,
	zb_lod_mnt,kb_lod_mnt,
	(ifnull(zb_lod_mnt,0)+ifnull(kb_lod_mnt,0)) lod_mnt_total,
	zb_wait_mnt,kb_wait_mnt,
	(ifnull(zb_wait_mnt,0)+ifnull(kb_wait_mnt,0)) wait_mnt_total,
	concat(round(zb_dlyd_cars/zb_cars*100,2),'%') zb_dlyd_pt,
	concat(round(kb_dlyd_cars/kb_cars*100,2),'%') kb_dlyd_pt,
	concat(round((ifnull(zb_dlyd_cars/zb_cars,0)+ifnull(kb_dlyd_cars/kb_cars,0))*100,2),'%')
	dlyd_pt_total,
	concat(round(zb_frqc_dlyd_cars/zb_cars*100,2),'%') zb_frqc_dlyd,
	concat(round(kb_frqc_dlyd_cars/kb_cars*100,2),'%') kb_frqc_dlyd,
	concat(round((ifnull(zb_frqc_dlyd_cars/zb_cars,0)+ifnull(kb_frqc_dlyd_cars/kb_cars,0))*100,2),'%')
	frqc_dlyd_total,
	zb_dlyd_mnt,kb_dlyd_mnt,
	(ifnull(zb_dlyd_mnt,0)+ifnull(kb_dlyd_mnt,0)) dlyd_mnt_total,
	round(ifnull(sum(zb_sys_mlg)/sum(zb_stip_mnt),0),2) zb_stip_speed,
	round(ifnull(sum(kb_sys_mlg)/sum(kb_stip_mnt),0),2) kb_stip_speed,
	(round(ifnull(sum(zb_sys_mlg)/sum(zb_stip_mnt),0)+ifnull(sum(kb_sys_mlg)/sum(kb_stip_mnt),0),2))
	stip_speed_total,
	round(ifnull(sum(zb_est_mlg)/sum(zb_actl_mnt),0),2) zb_actl_speed,
	round(ifnull(sum(kb_est_mlg)/sum(kb_actl_mnt),0),2) kb_actl_speed,
	(round(ifnull(sum(zb_est_mlg)/sum(zb_actl_mnt),0)+ifnull(sum(kb_est_mlg)/sum(kb_actl_mnt),0),2))
	actl_speed_total,
	round(zb_pnlt/10000,2) zb_pnlt,round(kb_pnlt/10000,2) kb_pnlt,
	(ifnull(round(zb_pnlt/10000,2),0)+ifnull(round(kb_pnlt/10000,2),0))
	pnlt_total,
	zb_uld_wait_mnt,kb_uld_wait_mnt,wd_uld_wait_mnt,
	round((ifnull(sum(zb_uld_wait_mnt),0)+ifnull(sum(kb_uld_wait_mnt),0)+ifnull(sum(wd_uld_wait_mnt),0))/
	(ifnull(sum(all_zb_cars),0)+ifnull(sum(all_kb_cars),0)+ifnull(sum(all_wd_cars),0)),2)
	uld_wait_mnt_total,
	zb_uld_mnt,kb_uld_mnt,wd_uld_mnt,
	(ifnull(zb_uld_mnt,0)+ifnull(kb_uld_mnt,0)+ifnull(wd_uld_mnt,0)) uld_mnt_total,
	concat(round(zb_brk_cars/zb_mlg/10000*100,2),'%') zb_brk_cars,
	concat(round(kb_brk_cars/kb_mlg/10000*100,2),'%') kb_brk_cars,
	concat(round(wd_brk_cars/wd_mlg/10000*100,2),'%') wd_brk_cars,
	concat((round((ifnull(zb_brk_cars/zb_mlg/10000,0)+ifnull(kb_brk_cars/kb_mlg/10000,0)+ifnull(wd_brk_cars/wd_mlg/10000,0))*100,2)),'%')
	brk_cars_total,
	concat(round(zb_accdt_cars/zb_mlg/10000*100,2),'%') zb_accdt_cars,
	concat(round(kb_accdt_cars/kb_mlg/10000*100,2),'%') kb_accdt_cars,
	concat(round(wd_accdt_cars/wd_mlg/10000*100,2),'%') wd_accdt_cars,
	concat((round((ifnull(zb_accdt_cars/zb_mlg/10000,0)+ifnull(kb_accdt_cars/kb_mlg/10000,0)+ifnull(wd_accdt_cars/wd_mlg/10000,0))*100,2)),'%')
	accdt_cars_total,
	concat(round(actl_tms/stip_tms*100,2),'%') tms_total
	from bdrpt.kd_car_trans_mont_stats t LEFT JOIN bdkdbase.location l on t.src_dbct_cd = l.location_xid
	where 1=1
	<if test="stats_mo != null and stats_mo != ''" >
	and concat(SUBSTR(stats_mo,1,4),'-',SUBSTR(stats_mo,5,6))=#{stats_mo}
	</if>
	<if test='SRC_DBCT_CD == "1"'>
	and src_dbct_cd = '集团'
	</if>
	<if test="SRC_DBCT_NM != null and SRC_DBCT_NM != ''">
	and src_dbct_cd = #{SRC_DBCT_NM}
	</if>
	GROUP BY src_dbct_cd,substr(stats_mo,5,6)
	</sql>
	
	<!-- 查询数据 -->
	<select id="pageQuery" resultType="map">
	<include refid="queryData"></include>
	</select>

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