🚀 go-pugleaf

I have been unable to find a single example on how to utilize the USER() function under SQL Builder, I have an easier way to run my query:
SELECT ORADBA.PS_PROJECT_INFO.PROJECT_ID,ORADBA.PS_PROJECT_INFO.PROJECT_NAME,ORADBA.PS_PROJECT_INFO.PROJECT_DESC
FROM ORADBA.PS_PROJECT_INFO
WHERE ORADBA.PS_PROJECT_INFO.PROJECT_ID = (SELECT ORADBA.PS_PROJECT_EMPLOYEES.PROJECT_ID 
                                    FROM ORADBA.PS_PROJECT_EMPLOYEES
                                    WHERE ORADBA.PS_PROJECT_EMPLOYEES.EMPLOYEE_ID = (SELECT ORADBA.PS_EMPLOYEE_LOOKUP.EMPLOYEE_ID FROM ORADBA.PS_EMPLOYEE_LOOKUP WHERE ORADBA.PS_EMPLoYEE_LOOKUP.USERNAME = (SELECT USER from dual)));


But for some reason it will not accept the this query ( i already ran it as a script via command line and it works)... So now I am trying to use the USER() function... Is there any documentation about these functions and how to use them. What I found in the help section was useless?
Thank you for your help in advance..
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