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Finding duplicate values in MySQL
I have a table with a varchar column, and I would like to find all the records that have duplicate values in this column. What is the best query I can use to find the duplicates?
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How to get all registered routes in Express?
...('/api/questions', questionsRoute);
I renamed the document.js file in apiTable.js and adapted it like this:
module.exports = function (baseUrl, routes) {
var Table = require('cli-table');
var table = new Table({ head: ["", "Path"] });
console.log('\nAPI for ' + baseUrl);
console....
What are the differences between virtual memory and physical memory?
...perating system creates and deals with these mappings - utilizing the page table, among other data structures to maintain the mappings. Virtual memory mappings are always found in the page table or some similar data structure (in case of other implementations of virtual memory, we maybe shouldn't ca...
MySql : Grant read only options?
...ns on database.
It depends on how you define "all read."
"Reading" from tables and views is the SELECT privilege. If that's what you mean by "all read" then yes:
GRANT SELECT ON *.* TO 'username'@'host_or_wildcard' IDENTIFIED BY 'password';
However, it sounds like you mean an ability to "see" ...
How to prevent line-break in a column of a table cell (not a single cell)?
How can I prevent automatic line breaks in a column of table (not a single cell)?
9 Answers
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MySQL Error 1093 - Can't specify target table for update in FROM clause
I have a table story_category in my database with corrupt entries. The next query returns the corrupt entries:
16 Answers...
How to update Identity Column in SQL Server?
...because it started
with a big number 10010 and it's related with another table, now I have 200 records and I want to fix this issue before the records increases.
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Remove Primary Key in MySQL
I have the following table schema which maps user_customers to permissions on a live MySQL database:
12 Answers
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What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association
... the object, in this case the customer. The customer has no columns in the table to store the orders, so you must tell it where in the order table it can save this data (which happens via mappedBy).
Another common example are trees with nodes which can be both parents and children. In this case, th...
How to hide first section header in UITableView (grouped style)
As the design of table views using the grouped style changed considerably with iOS 7, I would like to hide (or remove) the first section header. So far I haven't managed to achieve it.
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