While working in database management, we often need to update data in one SQL table based on information from another table. Moreover, we do this to maintain data consistency and ensure that our database stays accurate and updated. We can also update data from one table to another based on...
We want toMERGE INTO(UPDATE/INSERT) thebookstable by using the secondaryauthorstable, and we’re matching the two based on the samebooks.author_id = authors.idcomparison. 我们想要使用辅助表authors表来MERGE INTO(UPDATE/INSERT)books,并且我们基于相同的books.author_id = authors.id比较来匹配两者。
We want toMERGE INTO(UPDATE/INSERT) thebookstable by using the secondaryauthorstable, and we’re matching the two based on the samebooks.author_id = authors.idcomparison. 我们想要使用辅助表authors表来MERGE INTO(UPDATE/INSERT)books,并且我们基于相同的books.author_id = authors.id比较来匹配两者。
Examples in this section demonstrate methods of updating rows from one table based on information in another table. N. Using the UPDATE statement with information from another table The following example modifies the SalesYTD column in the SalesPerson table to reflect the most recent sales recorded ...
INSERT INTO EmpLog(EmployeeID, FirstName, LastName, HireDate, Operation, UpdatedOn, UpdatedBy) SELECT EmployeeID, Firstname, LastName, HireDate, 'INSERT', GETDATE(), SUSER_NAME() FROM INSERTED; GO Now that we have our two tables and trigger created on our “Employee” table, let’s ...
modify_table_partition::= Text description of modify_table_partition (add_table_subpartition::=) update_global_index_clause::= Text description of update_global_index_clause parallel_clause::= Text description of parallel_clause partition_attributes::= ...
That was quite easy, but let’s suppose that we need to an UPDATE based on another big table and use the value in the other table. Suppose that we would like to do the same UPDATE like we did with the CTE on SQL Server, we can overcome the JOIN problem with this code: ...
A CROSS JOIN matches all records from fields specified in one table with all records from fields specified in another table. Remember that a CROSS JOIN does not have an ON or USING clause, but otherwise looks very similar to the code for an INNER JOIN, LEFT JOIN, RIGHT JOIN, or FULL JO...
1You can't access a memory-optimized table or natively compiled stored procedure from the context connection (the connection from SQL Server when executing a CLR module). You can, however, create and open another connection from which you can access memory-optimized tables and natively compiled...
A column has been selected that cannot be specified in the select list of this query. This column is based on a column in a view or fullselect that is the target of an INSERT or UPDATE statement that is specified in a FROM clause using either NEW TABLE or FINAL TABLE. The column selec...