PLPGSQL 捕获循环中的任何异常

Question

我有以下地理编码功能，无需该EXCEPTION WHEN OTHERS THEN部分即可正常工作。但是，我希望循环继续，以防出现异常。所以我试图通过使用来做到这一点EXCEPTION WHEN OTHERS THEN

CREATE OR REPLACE FUNCTION mygetcounty2() RETURNS void LANGUAGE PLPGSQL AS $$
DECLARE idVariable uuid;
begin
FOR i IN 1..100 LOOP

SELECT id into idVariable FROM address_table WHERE county IS NULL AND parse_address_error = false LIMIT 1;

UPDATE address_table set county =
(select namelsad from tiger_data.county_all where ST_Contains( the_geom, ST_GeomFromText( (SELECT ST_AsText( ST_SnapToGrid(g.geomout, 0.00001) ) As wktlonlat FROM geocode(address, 1 ) AS g), 4269 ) ))
where id = idVariable;
EXCEPTION WHEN OTHERS THEN
     UPDATE address_table set parse_address_error = true where id = idVariable;
END LOOP;
return;
end;
$$;

但在尝试创建该函数时我收到以下消息

ERROR:  syntax error at or near "EXCEPTION"
LINE 15: EXCEPTION WHEN OTHERS THEN
         ^
SQL state: 42601
Character: 511

知道我做错了什么吗？

编辑：

我在循环内添加了一个新的begin,块。end创建函数时我不再遇到错误。

Create or replace function mygetcounty2()
returns void
language plpgsql
as
$$
DECLARE idVariable uuid;
begin
FOR i IN 1..100 LOOP

begin

SELECT id into idVariable FROM address_table WHERE county IS NULL AND parse_address_error = false LIMIT 1;

UPDATE address_table set county = 
(select namelsad from tiger_data.county_all where ST_Contains( the_geom, ST_GeomFromText( (SELECT ST_AsText( ST_SnapToGrid(g.geomout, 0.00001) ) As wktlonlat FROM geocode(address, 1 ) AS g), 4269 ) ))
where id = idVariable;
EXCEPTION WHEN OTHERS THEN
      raise notice 'oops %', sqlstate;
     UPDATE address_table set parse_address_error = true where  id = idVariable;

    end;
END LOOP;
return;
end;
$$;      

Answer 1

-块EXCEPTION中不能有子句。LOOPEND LOOP

将第一个包裹UPDATE在它自己的BEGIN-END块中并在其中添加子句。