Open frbsfri opened 7 years ago
I wrote a foreign data wrapper for HDF5 files, I can perform any query on data. However, some queries are really slow. for example this query takes Time: 12388,885 ms:
Time: 12388,885 ms:
select "printerId", date,"ZPosition" from myforeigntable where ullid=54077217821;
printerId | date | ZPosition --------------+----------+------------------ FER921002231 | 20130102 | -6 (1 row)
How should I write quals in my code? please give me an example of using quals and a good description.
Thanks,
I wrote a foreign data wrapper for HDF5 files, I can perform any query on data. However, some queries are really slow.
for example this query takes
Time: 12388,885 ms:
select "printerId", date,"ZPosition" from myforeigntable where ullid=54077217821;
How should I write quals in my code? please give me an example of using quals and a good description.
Thanks,