3 ms·
I've forced the habit upon myself to first compose a SELECT statement and verify that it will give me exactly the dataset that I want to run my operation on. Th
by fr1tkot 7y ago
I've forced the habit upon myself to first compose a SELECT statement and verify that it will give me exactly the dataset that I want to run my operation on. Then I wrap that statement into a CTE and run the DELETE / UPDATE on the CTE.
It doesn't save me time, but a lot of nerves.
- CubicsRube 7y agoI'm used to writing the SELECT query and adding the commented-out DELETE just below the SELECT line. SELECT * -- DELETE FROM Sales WHERE Customer = 1 Next, selecting the whole query and executing it. If results are satisfactory - selecting only the DELETE part.
- piaste 7y agoThis is the one I use too. Tiny difference - I write select * -- delete from sales where customer = 1 so it's even harder to accidentally highlight the 'delete' part. Although I've switched to DBeaver for a year now, and it automatically pops up a warning when it detects a DELETE query without a WHERE, which is very nice.
- samus 7y agoDBeaver has something even better, albeit sometimes annoying: you can define a connection as "Production" (highlighted red) and "Test" (green). On Production systems, DBeaver will ask you for confirmation for every write statement.