I\'ve got a h开发者_运维问答uge InnoDB table(>500 millions rows) which I\'d like to partition by hash in order to decrease the index size. I\'d like to achieve this with a minimal downtime(e.g 10 minu
When we add a new table, we made a mistake : a field was a varchar(255), but we have to write join queries.
I want to run subquery within ALTER TABLE command in DB2. ALTER TABLE user ALTER column userId SET GENERATED ALWAYS AS IDENTITY
I have a varchar column that needs more space.How can I increase the size of the column (the number of characters it can have inserted into it), and not lose the data that is in there?
I am changing a column from text to varchar column. +------------------+--------------+------+-----+---------+-------+
I have huge table with 1 million records, i wou开发者_开发知识库ld like to modify some of the text columns to varchar column. Which is the best way to modify the columns.
I\'m having issues executing multiple ALTER TABLE statements in the same transaction, on MySQL 5.1.41.There is another developer running the same code and having none of these issues on 5.1.49
I have a new field in the Client called note which has a one-to-one relation with Notes. I want to be able to add the note column under the Client table in mysql. It does not work when I use python ma
I\'m relatively new to MySQL. So, let\'s say I make a table and my table utilizes an \"id\" column to keep track of a unique identification number. However, when creating my table, I neglected to spe
I have a firebird database schema which was set up by various CREATE TABLE scripts. These scripts have been commited to a source control system (see Scott Allen\'s sites).
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