I guess there must be an auto reindex every time a delete takes place. If there are too many deletes for many tables resulting in many records deleted, reindexing will al开发者_JS百科so be time consum
I get the following error when I try and execute the code down below.I have added the SQL string I pass as well.What am I missing?
How do you delete rows from a table, where a column contains a substring, but the type of that column is \'Long\'. (Yes, I开发者_如何学Go know I shouldn\'t use Long, but I\'m maintaining someone else\
I accidentally deleted some huge number of rows from a table... How can I roll it back? I executed the query using PuTTY.
I have db with multiple entries. I Google out something like this SELECT COUNT(*), item_id, text, number FROM ads
I am looking for a way to return the number of rows affected by a DELETE clause in PostgreSQL. The documentation states that;
Using Doctrine, I am trying to delete records in a single table based on data gathered from multiple tables.
Is this the correct way to do it? DELETE t1, t2, t3, t4 FROM table1 as t1 INNER JOINtable2 as t2 on t1.id = t2.id
I\'m trying to write an SQL query for my program, but I just can\'t figure out how. I don\'t know enough SQL.
i have some delete queries to run against some pretty huge table (~100 GB), and i want to optimize them as much as possible: