postgresql函数相关操作笔记

pg库批量插入数据

create or replace function aa1(a2 bigint) returns void
AS $declare ii integer; begin II:=1; FOR ii IN 1..a2 LOOP --select ii; insert into test(id,bill_no) values(ii::text,ii::text); end loop; end;$ LANGUAGE plpgsql;

select aa1(3::bigint);

case when else end

select CASE WHEN r.name in (‘1’,‘3’) THEN 1

      ELSE -1 end   from test r limit 2;