标签：bat code 循环 span 过程 ble 方法 char 返回
业务背景：
机构ID：省（360000），市级（360100），区县级（360101）
输入一个机构ID（可能是区，也可能是市）在sys_ability_warning_rule表中查询对应机构ID，
如：输入360305（区县级），
如果表中有对应ID，则直接返回360305，
如果没有对应ID，则查询有没有市级ID（360300），如果有，则返回360300，
如果市级ID也没有，则查询省级ID（360000），如果有，则返回360000，
如果省级ID也没有，则返回（000000）
方法一：循环法
CREATE PROCEDURE `getSchWarnRule`(IN organiz VARCHAR(20),OUT organiz_rule VARCHAR(20)) BEGIN DECLARE sqlStr VARCHAR(4000) DEFAULT ‘‘; DECLARE leg INT DEFAULT 6; REPEAT SET sqlStr = CONCAT("select count(*) into @count from sys_ability_warning_rule wr where wr.organiz = ‘", organiz, "‘"); SET @sql2 = sqlStr; PREPARE stat1 FROM @sql2; EXECUTE stat1; IF @count = 0 THEN SET leg = leg - 2; SET organiz = RPAD(LEFT(organiz,leg),6,0); END IF; UNTIL @count>=1 OR leg = 0 END REPEAT; SET organiz_rule = organiz; END
方法二：递归法
DROP PROCEDURE IF EXISTS `getSchWarnRule2`; -- organiz 机构 -- organiz_rule 有效机构 CREATE PROCEDURE getSchWarnRule2(IN organiz VARCHAR(20),OUT organiz_rule VARCHAR(20)) BEGIN DECLARE sqlStr VARCHAR(4000) DEFAULT ‘‘; DECLARE organiz_rule2 VARCHAR(20) DEFAULT ‘‘; DECLARE organiz2 VARCHAR(20) DEFAULT RPAD(organiz,6,0); IF organiz2!=‘000000‘ THEN SET sqlStr = CONCAT("select count(*) into @count from sys_ability_warning_rule wr where wr.organiz = ‘", organiz2, "‘"); SET @sql2 = sqlStr; PREPARE stat1 FROM @sql2; EXECUTE stat1; IF @count=0 THEN call getSchWarnRule2(LEFT(organiz,CHAR_LENGTH(organiz)-2), organiz_rule2); SET organiz_rule = organiz_rule2; ELSEIF @count>=1 THEN SET organiz_rule = organiz; END IF; END IF; END;
MyBatis调用：
WarnRuleMapper.java 接口
public interface WarnRuleMapper extends BaseMapper<SysAbilityWarningRule> { public String getSchWarnRule(Map map); }
WarnRuleMapper.xml
<select id="getSchWarnRule" parameterType="java.util.Map" resultType="java.lang.String" statementType="CALLABLE" > { call getSchWarnRule( #{organiz,mode=IN,jdbcType=VARCHAR}, #{organiz_rule,mode=OUT,jdbcType=VARCHAR} ) } </select>
然后再用Service层调用就OK了。
标签：bat code 循环 span 过程 ble 方法 char 返回
原文地址：https://www.cnblogs.com/yifanSJ/p/9206676.html
