Combining two tables on join on Datetime

[Peter58]

Hi, i have a problem with my sql query, I tried everything but until now not the right results.
Problem :
I have two tables, One  that is called Alarms and the other one Logs.
From Alarms I want to use the fields Machine, Message en datetime which is in 2020-02-27 19:11:54:123 format.  In the table Logs I have the fields Anode and Datetime also in 2020-02-27 19:11:54:123  format.
When a alarms occurs I want to use the datetime field to look for the Anode in the other table Logs with the same Datetime value but only on the whole second, I want only one value back.
So the ouput would be someting like 
Machine, Message ,Datetime,Anode 
I believe I have to use the LEFT JOIN instruction :
SELECT Machine,Message,DateTime,Anode
FROM Table1.Alarms
LEFT JOIN Logs
ON table1.DateTime = table2.DateTime;  
Can Anyone help me with this ?
Thanks in advance, Peter

 

[dsonesuk]

Add WHERE clause where the 'second' value matches

Using MSSQL - DATEPART()

https://www.w3schools.com/sql/func_sqlserver_datepart.asp

OR

MYSQL - SECOND()

https://www.w3schools.com/sql/trymysql.asp?filename=trysql_func_mysql_second