[GENERAL] i have a problem with judge some words contain chinese word!

Hello: I have a problem with juding some words contain chinese word. I found that with oracle.but i can't find it in postgresql. oracle? has acsiistr and lengthb to deal with it.i wonna to know postgresql how to ! ??? thx !

[GENERAL] my problem for i/o error when i use postgre

Hello everybody work for postgre: I have a problem for i/o error when i using java programming.it happend when I disconnect database.but ,i'm not sure its database'bug or my programming'bug.I follow a text in attachment. I hope your help! thanks !