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Bogus foreign key constraint fail
...Two possibilities:
There is a table within another schema ("database" in mysql terminology) which has a FK reference
The innodb internal data dictionary is out of sync with the mysql one.
You can see which table it was (one of them, anyway) by doing a "SHOW ENGINE INNODB STATUS" after the drop f...
Delete all records in a table of MYSQL in phpMyAdmin
... detailed blog with example: http://sforsuresh.in/phpmyadmin-deleting-rows-mysql-table/
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With MySQL, how can I generate a column containing the record index in a table?
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@smhnaji MySQL requires that every "derived table" is given a name. I decided to call it "r" :) ... It has little purpose in this case, but you'd normally use it to reference attributes of the derived table, as if it was a real table....
What are the differences between the BLOB and TEXT datatypes in MySQL?
...rted and compared based on the collation of the character set.
http://dev.mysql.com/doc/refman/5.0/en/blob.html
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MySQL get row position in ORDER BY
With the following MySQL table:
9 Answers
9
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Update one MySQL table with values from another
I'm trying to update one MySQL table based on information from another.
2 Answers
2
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Find rows that have the same value on a column in MySQL
... created what was essentially infinite recursion or something on mysql resulting in a dead database due to "too many connections" :-/
– huygir
Mar 5 '18 at 17:40
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SQL query return data from multiple tables
...mply a color listing so that we know what colors we have in the car yard.
mysql> create table colors(id int(3) not null auto_increment primary key,
-> color varchar(15), paint varchar(10));
Query OK, 0 rows affected (0.01 sec)
mysql> show columns from colors;
+-------+-------------+-...
Real escape string and PDO [duplicate]
I'm using PDO after migrating away from the mysql library. What do I use in place of the old real_escape_string function?
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How to prepend a string to a column value in MySQL?
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Many string update functions in MySQL seems to be working like this:
If one argument is null, then concatenation or other functions return null too.
So, to update a field with null value, first set it to a non-null value, such as ''
For example:
update ta...