http://dba.stackexchange.com/questions/97095/set-session-custom-variable-to-store-user-id set sessi ...
PostgresQL 字符串隱式轉換JSON腳本: -- 隱式將varchar轉換為json CREATE OR REPLACE FUNCTION json_in_varchar(varcha ...
coalesce(expr1,expr2,expr3...) 直到找到一個非null值返回,右邊的表達式則不參與運算;若所有為null,返回null. eg:判斷json是否包含某屬性,若無 ...
from: http://stackoverflow.com/questions/1251233/unable-to-run-postgresql-as-windows-servicepg_ctl - ...
testdb=# select * from public.hello_invoker_wrap('吳xx'); hello_invoker_w ...