Same sql execution get some column data missing by use pure postgresql driver

Hi,teiid devleoper

I use rubygem-pg to connect the teiid server. but i found a weird issues. I got som column missing by postgresql, but the same sql execution got full column data in same source/same table. it depend on my private data expose concern. could you please give me your email, i can directly send my testing script to you. dxiao@redhat.com you can touch me in internal channel. thanks a lot.