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Translating T-SQL query to x++

Hi guys, I'm trying to convert the following T-SQL query to x++:

INSERT INTO 
TABLE1
(COLUMN1, COLUMN2, COLUMN3)
SELECT
@VARIABLE1 AS COLUMN1,
@VARIABLE2 AS COLUMN2,
TABLE2.COLUMN3 AS COLUMN3
FROM 
#TABLE2 TABLE2 
LEFT JOIN TABLE1 WITH (NOLOCK) ON
TABLE1.COLUMN1 = TABLE2.COLUMN1
AND TABLE1.COLUMN2 = @SOMEVARIABLE
WHERE
TABLE1.COLUMN3 IS NULL

but when I wrote it in x++, it came out like this:

while select column3
from table2
where table1.column3 == ''
outer join table1 
where table1.column1 == table2.column1
&& table1.column2 == someVariable
{
table1.column1 = variable1;
table1.column2 = variable2;
table1.column3 = table2.column3;
insertRecordList.Add(table1);
}
insertRecordList.insertDatabase();

Which I'm pretty sure it's wrong because it won't filter on that first 'where' clause, as the table buffer is still empty at that point (I believe).

What would be the appropriate way to translate that to x++? Am I approaching this the wrong way?

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