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How to add new column to MYSQL table?
I am trying to add a new column to my MYSQL table using PHP. I am unsure how to alter my table so that the new column is created. In my assessment table I have:
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What is the difference between MySQL, MySQLi and PDO? [closed]
What is the difference between MySQL, MySQLi and PDO ?
4 Answers
4
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MySQL “NOT IN” query
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NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL in MySQL
MySQL, as well as all other systems except SQL Server, is able to optimize LEFT JOIN / IS NULL to return FALSE as soon the matching value is found, and it is the only system that cared to document this behavior.
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Select mySQL based only on month and year
I have a column in my mySQL DB that has some rows. One of this row is a DATE, like this: 2012-02-01
12 Answers
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Mysql: Select rows from a table that are not in another
... this only works as expected when none of the columns have NULL values. In MySQL NULL != NULL so every row that has a NULL value will be returned even if there is a duplicate row in the second table.
– Kyle Kochis
Apr 7 '15 at 2:49
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In MySQL, how to copy the content of one table to another table within the same database?
I am new to MySQL. I would like to copy the content of one table to another table within the same database. Basically, I would like to insert to a table from another table. Is there easy way of doing this?
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How to change a table name using an SQL query?
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In MySQL :-
RENAME TABLE `Stu Table` TO `Stu Table_10`
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Create an index on a huge MySQL production table without table locking
I need to create an index on a ~5M rows MySQL table. It is a production table, and I fear a complete block of everything if I run a CREATE INDEX statement...
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How can I search (case-insensitive) in a column using LIKE wildcard?
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Friendly reminder that this is a mysql answer. If you're using PostgreSQL, ILike is the solution to the above question.
– Steve
Sep 6 '13 at 5:57
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Sequelize Unknown column '*.createdAt' in 'field list'
...ize('sequelize_test', 'root', null, {
host: "127.0.0.1",
dialect: 'mysql',
define: {
timestamps: false
}
});
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