Menu
I need to insert one column's data into another column within the same table.
Can anybody tell me how to write this?
Thanks
520
Click the tab for the table with the columns you want to copy and select those columns. From the Edit menu, click Copy. Click the tab for the table into which you want to copy the columns. Select the column you want to follow the inserted columns and, from the Edit menu, click Paste.
In such a case, you can use the following UPDATE statement syntax to update column from one table, based on value of another table. UPDATE first_table, second_table SET first_table. column1 = second_table. column2 WHERE first_table.id = second_table.
In Microsoft SQL Server, we can change the order of the columns and can add a new column by using ALTER command. ALTER TABLE is used to add, delete/drop or modify columns in the existing table. It is also used to add and drop various constraints on the existing table.
SELECT *, CONCAT(FIRSTNAME, LASTNAME) AS FIRSTNAME FROM demo_table; Output: Here, we can see that FIRSTNAME and LASTNAME is concatenated but there is no space between them, If you want to add space between the FIRSTNAME and LASTNAME then add space(' ') in CONCAT() function. This method will change the original table.
UPDATE table SET col_2 = col_1 If you want to copy data from one column to another on the same table:
UPDATE table_name SET destination_column_name=orig_column_name WHERE condition_if_necessary IF you want to add a new column and copy the original data to that column:
ALTER TABLE table_name ADD new_column_name column_type NULL UPDATE table_name SET destination_column_name=orig_column_name WHERE condition_if_necessary If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
