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We want to store a serialized object in a table along with a unique internal ID. We\'d only ever want to read/write/(rarely)u开发者_开发问答pdate the rows.
How do I get future keys from a Mysql InnoDb? Oracle and Postgres both have the concept of sequences and a nextval-function. Mysql seems to be a bit different.
We want to switch from MyISAM to InnoDB for several reasons, but we do not intend to use transactions with BEGIN/COMMIT etc.
We are using Mysql 5.1 in our production servers and trying to run an alter query to change the datatype of a column from tinytext to varchar(200). On running the alter query we are seeing this error
All I need is to create 2 tabeles with next structure: The SQL: CREATE TABLE IF NOT EXISTS `ds_cats` ( `id` int(11) NOT NULL AUTO_INCREMENT,
I have a relatively big MySQL InnoDB table (compressed), and I sometimes need to alter its schema (increasing column size or adding a field).
I have the following: TableA - 20M rows TableB - 500K rows And many queries, in particular the following, take forever.
This is the SQL: CREATE TABLE user ( userID INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY NOT NULL, username VARCHAR(100) NOT NULL,
I\'m encountering data loss of mysql, below is the steps: 1.I converted Table_A from MyISAM to InnoDB (with innodb_file_per_table OFF), saw the ibdata1 size increased;
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