PostgreSQL行记录到数组

Question

我有这个查询

function output = new_synch(rxWaveform,pssRef)

%PSSIndices = ltePSSIndices(enb);         % getting PSS indexes
%pssGrid = lteDLResourceGrid(enb);       % generate empty sub frame for PSS symbols
%pssGrid(PSSIndices) = ltePSS(enb);      % map PSS symbols into the subframe
%pssRef = lteOFDMModulate(enb,pssGrid); % generate PSS reference signal via LTE OFDM

% getting the lenghts of the received waveform and PSS reference signal

rxSize = size(rxWaveform,1);
pssSize = size(pssRef,1);

% performing correlation between received waveform and pss symbols
pssCorr = xcorr(rxWaveform,pssRef);  

% segmenting resultant vector to identify the first local maximum
pssCorr = pssCorr(rxSize - pssSize:rxSize + pssSize,:);

% extract the index of first local maximum, M is not useful here, just for
% the output result 
[M,index] = max((abs(pssCorr)));

%calculating offset using local maximum
offset = index - pssSize -1;  % subtracted from 1 due to shift in the 



output = rxWaveform(1+offset:end,:);





end

返回此输出

select ROW(qid::integer,a.prev_qid::integer) ids from getchildren(39) b 
    cross join lateral(select qid prev_qid from getprevquestion(b.qid)
        )a

我想将这些记录汇总成这样

(42,39)
(43,39)
(48,42)
(49,42)
(50,42)
(51,43)
(52,43)
(53,43)

我需要遍历这样的数组

此查询

((42,39),(43,39),(48,42),(49,42),(50,42),(51,43),(52,43),(53,43))

返回错误

错误：记录类型尚未注册

**********错误**********