postgresql存储过程循环加判断（避免else的影响）

目的：要想组装成这样的json

countData:[{
    "name":"区县1"，
    “typeValue”:[{
        "name":"单位用地税收(万元/亩)"，
        “value”:"90"
        },{
        "name":"单位能耗营业收入(万元/吨标准煤)",
        "value":"20"
        },{
        "name":"单位污染物排放营业收入(万元/当量吨)",
        "value":"10"
        }]
    },{
    "name":"区县2"，
    “typeValue”:[{
        "name":"单位用地税收(万元/亩)"，
        “value”:"90"
        },{
        "name":"单位能耗营业收入(万元/吨标准煤)",
        "value":"20"
        },{
        "name":"单位污染物排放营业收入(万元/当量吨)",
        "value":"10"
        }]
    ]

第一条sql：先查询出所有的区县名称，namesql

第二条sql：查询所有的区县名称所带的值,valuesql

提前定义好：

sql1_sql text;
sql1 record;
sql1_ref refcursor;
sql1_ text default '';

sql2_sql text;
sql2 record;
sql2_ref refcursor;
sql2_ text default '';


open sql1_ref for execute sql1_sql;
    loop
        fetch sql1_ref into sql1;
        exit when not fount;
        str:=str||'{"name":"'||"sql1.name"||'","typeValue":[';
        open sql2_ref for execute sql2;
            loop
                fetch sql2_ref into sql2;
                exit when not found;
                if sql2."name"=sql1."name" then
                   str:=str||'{"name":"'||"sql2.name"||'","value":"'||"sql2.value"||'"}';
                end if;
            end loop
         close sql2_ref;
        str:=SUBSTRING(str0,"length"(str-1));
    str:=str||']}';
    end loop;
close sql1_ref;
str:=str||']}';