copy from one table to another postgres using matching column

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Timothée
22 May 2016
1UPDATE Table2 --format schema.table_name
2SET 
3ref_id2 = table1.ref_id1
4FROM table1 -- mention schema name
5WHERE table1.id = table2.id
6AND 
7table1.a_ref1 = table2.b_ref1;
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