update from table tsql
UPDATE table1 SET table1.column = table2.column
FROM Table1 table1
INNER JOIN Table2 table2 ON table1.id = table2.id;
update from table tsql
UPDATE table1 SET table1.column = table2.column
FROM Table1 table1
INNER JOIN Table2 table2 ON table1.id = table2.id;
update select sql
--the simplest way of doing this
UPDATE
table_to_update,
table_info
SET
table_to_update.col1 = table_info.col1,
table_to_update.col2 = table_info.col2
WHERE
table_to_update.ID = table_info.ID
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