Start Updating table from another table

Updating table from another table

I guess it is difficult for you to state your problem in English clearly enough, bit don't despair! Post some 5-10 rows from each table, explain what should become what, and that may just be enough for us to understand what you are trying to accomplish. I've done this before using subqueries, but I knew there had to be a simpler way. Plus the answer already has an accepted answer which works.

In other words, I need to update the Unfortunately, your question is not clear.

The SQL Server (Transact-SQL) UPDATE statement is used to update existing records in a table in a SQL Server database.

There are 3 syntaxes for the UPDATE statement depending on whether you are performing a traditional update or updating one table with data from another table.

Adding a WHERE clause would limit the result set of the JOINed table as well. Col2)) UPDATE CTE SET Col1 = _Col1, Col2 = _Col2 statement on its own first to sanity check the results but it does requires you to alias the columns as above if they are named the same in source and target tables.

@Roger Ray what version of My SQL and what was your query, as this DOES infact function as [email protected] Wood yeah. It would be great if someone knows how to implement it to My SQL and share with everyone. This also has the same limitation as the proprietary Thank you!

UPDATE Table SET Table.col1 = other_table.col1, Table.col2 = other_table.col2 FROM Table INNER JOIN other_table ON = other_WHERE Table.col1 ! = other_table.col2 or (other_table.col1 is not null and table.col1 is null) or (other_table.col2 is not null and table.col2 is null) ; WITH CTE AS (SELECT T1. So all the answers involving the FROM clause returned a syntax error. UPDATE suppliers SET supplier_name = (SELECT FROM customers WHERE customers.customer_id = suppliers.supplier_id) WHERE EXISTS (SELECT FROM customers WHERE customers.customer_id = suppliers.supplier_id); UPDATE Table SET Table.col1 = other_table.col1, Table.col2 = other_table.col2 --select Table.col1, other_table.col, Table.col2,other_table.col2, * FROM Table INNER JOIN other_table ON = other_update t1 -- just reference table alias here set t1.somevalue = t2.somevalue from table1 t1 -- these rows will be the targets inner join table1 t2 -- these rows will be used as source on ..................

-- the join clause is whatever suits you UPDATE from SELECT with INNER JOIN in SQL Database Since there are too many replies of this post, which are most heavily up-voted, I thought I would provide my suggestion here too.

I was change the statement like below, and got the same result, my question is what’s different in these two statements ?