使用ANY$ 1

编程问答 2022-07-04

问题描述

我有一个表格（lrecords）

------------------------------------------
| UserId | Timestamp | Key      | Value |
------------------------------------------
   99     | 1598603308 | Spo2 |      99
   99     | 1598603318 | Spo2 |      98
   99     | 1598603328 | Spo2 |      96
   99     | 1598603338 | Spo2 |      97
...
...
   99     | 1598603307 | Breath |      99
   99     | 1598603311 | Breath |      98
   99     | 1598603315 | Breath |      96
   99     | 1598603319 | Breath |      97

...

这是我要编写的功能

CREATE OR REPLACE FUNCTION public.test(
    "UserIds" uuid[])
    RETURNS record
    LANGUAGE 'plpgsql'

    COST 100
    VOLATILE 
AS $BODY$
BEGIN
EXECUTE $$
    select json_agg(rows) as "LatestRecords" from (
        select "RowId"[1] as "UserId","RowId"[2] as "Timestamp","HeartRate","BreathRate","Sdnn","Temperature","Spo2","Plusstage"
        from crosstab('select ''{"UserId","Timestamp"}''::text[],"Key","Value" from lrecords where "UserId" = ANY($1)')
        AS ct("RowId" text[],"HeartRate" real,"BreathRate" real,"Sdnn" real,"Temperature" real,"Spo2" real,"Plusstage" real)) rows
    $$ using "UserIds";
END;
$BODY$;

ALTER FUNCTION public.test(uuid[])
    OWNER TO postgres;

我得到的错误是

ERROR:  there is no parameter $1
LINE 1: ...ext[],"Value" from lrecords where "UserId" = ANY($1)

uuid数组确实可以在其他函数中工作，但是当其在crosstab中时不起作用。我尝试将crosstab中的语句更改为

'select ''{"UserId","Value" from lrecords where "UserId" = ANY('||$1||')

但没有帮助。

我不确定这里缺少什么。任何帮助表示赞赏：）

解决方法

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crosstabfunctionfunctionstored-procedures