字段列表中的MySQL列“ nume”是模棱两可的错误

Question

select nume as "Nume", adresa as "Adresa",localitate as "Localitatea"
from info 
left join angajati 
on id_i = id_a
where localitate like "Orhei" 
and year(curdate()) - year(data_nast) >=50

I have 2 tables with nume field and i'm getting the error, please help i don't now why this code didn't work !!!

Answer 1

You need to define which table the nume field should be coming from. Here's one way using a table alias:

select i.nume as "Nume", 
       adresa as "Adresa",
       localitate as "Localitatea"
from info i 
    left join angajati a on id_i = id_a
where localitate like "Orhei" 
     and year(curdate()) - year(data_nast) >=50

When using joins , if the same field is represented in multiple tables, you have to define which table you are referring to.

Answer 2

Since you are joining on the id_i and id_a columns, the two nume columns are distinct in the joined result. Specify which table's nume column you mean:

SELECT info.nume AS "Nume" ...

or

SELECT angajati.nume AS "Nume" ...