I am trying a simple UPDATE table SET column1 = 0 on a table with about 3 million rows on Postegres 8.4 but it is taking forever to finish. It has been running for more than 10 min. Before, I tried to run a VACUUM and ANALYZE commands on that table and I also tried to create some indexes (although
Tag: sql-update
MySQL update statement to store ranking positions
I’m trying to get my head around a query and I just can’t figure it out. I would appreciate if someone give me a pointer. As a simple example of what I’m trying to achieve, I have these records in the …
How do I UPDATE from a SELECT in SQL Server?
In SQL Server, it is possible to insert rows into a table with an INSERT.. SELECT statement: Is it also possible to update a table with SELECT? I have a temporary table containing the values and would like to update another table using those values. Perhaps something like this: Answer
MySql – Way to update portion of a string?
I’m looking for a way to update just a portion of a string via MySQL query. For example, if I have 10 records all containing ‘string’ as part of the field value (i.e., ‘something/string’, ‘…
How can I do an UPDATE statement with JOIN in SQL Server?
I need to update this table in SQL Server with data from its ‘parent’ table, see below: Table: sale Table: ud sale.assid contains the correct value to update ud.assid. What query will do this? I’m thinking of a join but I’m not sure if it’s possible. Answer Syntax strictly depends on which SQL DBMS you’re using. Here are some ways