Can SQL Server Update Tables Using a SELECT Statement?

In the SQL Server, use the Select statement to update the table

SQL Server can use the

statement to insert the results of the

statement into the table. This article discusses whether the INSERT...SELECT statement can be used to perform a similar update operation. SELECT SELECT Can SQL Server use the Select update table?

Different from sentences, SQL Server does not support

grammar. However, you can use the combination of and statement to achieve similar functions.

Use join and set to update

INSERT...SELECT UPDATE...SELECT To use the data update table in the statement, please follow the following steps to operate: JOIN SET

Create a statement to match the line to be updated.

In the clause, specify the corresponding value of the column to be updated and the corresponding value of the statement.

Use the clause filtering line to ensure that only the expected lines affect the expected lines. SELECT

For example, consider the following inquiries:
1. JOIN
In this example,
2. The statement uses the SET and SELECT columns in the
data modification of
3. in the matching WHERE line.
Make sure that only the line with

value is updated, and the

clause will be updated to

equal to 'cool'.

UPDATE Table_A
SET Table_A.col1 = Table_B.col1,
    Table_A.col2 = Table_B.col2
FROM Some_Table AS Table_A
INNER JOIN Other_Table AS Table_B ON Table_A.id = Table_B.id
WHERE Table_A.col3 = 'cool';

The above is the detailed content of Can SQL Server Update Tables Using a SELECT Statement?. For more information, please follow other related articles on the PHP Chinese website!