function - 执行 postgresql 函数时出错

Question

我有这个简单的功能：

CREATE OR REPLACE FUNCTION soundavity.perform_search_by_serie_name( in_search_text   text )
RETURNS bigint[] AS

$BODY$

DECLARE 
match_id bigint[];  

BEGIN

SELECT id INTO match_id
FROM soundavity.tv_serieslist_tbl
where id IN (   
        SELECT id 
        FROM table
        WHERE to_tsvector('english', name) @@ to_tsquery('english', in_search_text)
        )
LIMIT 10;   


RETURN match_id;

END;

但是当我尝试

select perform_search_by_serie_name('something');

Postgres 返回：

ERROR:  array value must start with "{" or dimension information
CONTEXT:  PL/pgSQL function soundavity.perform_search_by_serie_name(text) line 8 at    SQL statement

错误在哪里？

Answer 1

'SELECT id' 返回 setof bigint 而不是 bigint 数组。试试这个：

DECLARE 
    match_id bigint[] = '{}';
    rid bigint;
BEGIN
    for rid in
        SELECT ... -- without INTO
    loop
        match_id:= array_append(match_id, rid);
    end loop;
RETURN match_id;