我想unnet其他數組來查詢的Postgres數據庫

Question

我調用函數，但它返回錯誤陣列值必須使用維度信息

Create or Replace Function get_post_process_info(IN v_esdt_pp character varying[]) 
Returns setof Record as 
$$ 
Declare 
post_processes RECORD; 
esdt_value character varying; 
v_sdsname character varying[]; 
v_dimension character varying[]; 
counter int := 1; 
Begin 
    -- to loop through the array and get the values for the esdt_values 
    FOR esdt_value IN select * from unnest(v_esdt_pp) 
    LOOP 

    -- esdt_values as a key for the multi-dimensional arrays and also as the where clause value 
    SELECT distinct on ("SdsName") "SdsName" into v_sdsname from "Collection_ESDT_SDS_Def" where "ESDT" = esdt_values; 
    raise notice'esdt_value: %',esdt_value; 

    END LOOP; 

    Return ; 
End 
$$ Language plpgsql; 



Select get_post_process_info(array['ab','bc]); 

Answer 1

你的函數消毒的開始「{」或：

CREATE OR REPLACE FUNCTION get_post_process_info(v_esdt_pp text[]) 
    RETURNS SETOF record AS 
$func$ 
DECLARE 
    esdt_value text; 
    v_sdsname text[]; 
    v_dimension text[]; 
    counter int := 1; 
BEGIN 
    FOR esdt_value IN 
     SELECT * FROM unnest(v_esdt_pp) t 
    LOOP 
     SELECT distinct "SdsName" INTO v_sdsname 
     FROM "Collection_ESDT_SDS_Def" 
     WHERE "ESDT" = esdt_value; 

     RAISE NOTICE 'esdt_value: %', esdt_value; 
    END LOOP; 
END 
$func$ Language plpgsql; 

電話：

Select get_post_process_info('{ab,bc}'::text[]); 

DISTINCT代替DISTINCT ON，缺少表別名，格式化，一些cruft，...
最後導致錯誤的直接原因：調用中缺少引號。

整個shebang可能被替換爲單個SQL語句。
但是，顯然，你的功能是不完整的。沒有任何回報。信息丟失。