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Using varchar(MAX) vs TEXT on SQL Server
...hould use a Full Text Index.
LIKE is simpler to implement and is often suitable for small amounts of data, but it has extremely poor performance with large data due to its inability to use an index.
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UITableView with fixed section headers
Greets,
I'm reading that the default behaviour of UITableView is to pin section header rows to the top of the table as you scroll through the sections until the next section pushes the previos section row out of view.
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How can I make a JPA OneToOne relation lazy
... a proxy object or NULL and it can't determine that by looking at its base table's columns due to one-to-one normally being mapped via shared PK, so it has to be eagerly fetched anyway making proxy pointless. Here's a more detailed explanation.
many-to-one associations (and one-to-many, obviously) d...
“where 1=1” statement [duplicate]
I saw some people use a statement to query a table in a MySQL database like the following:
10 Answers
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sql query to return differences between two tables
I am trying to compare two tables, SQL Server, to verify some data. I want to return all the rows from both tables where data is either in one or the other. In essence, I want to show all the discrepancies. I need to check three pieces of data in doing so, FirstName, LastName and Product.
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How important is the order of columns in indexes?
...index pages that the optimiser must scan; this can be significant in large tables with millions of rows
– Paul Hatcher
Oct 28 '16 at 14:58
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How do I vertically align text in a div?
...solution.html
Article summary:
For a CSS 2 browser, one can use display:table/display:table-cell to center content.
A sample is also available at JSFiddle:
div { border:1px solid green;}
<div style="display: table; height: 400px; overflow: hidden;">
<div style="display: table-c...
Salting Your Password: Best Practices?
... Site-wide random salt is bad, since an attacker can precompute rainbow tables and grab your entire user database. If you don't understand this, please don't write login/security systems :) - you NEED per-user salts.
– snemarch
Mar 23 '09 at 20:52
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On delete cascade with doctrine2
... make a simple example in order to learn how to delete a row from a parent table and automatically delete the matching rows in the child table using Doctrine2.
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Printing Lists as Tabular Data
...e 24
Bob 19
tabulate has many options to specify headers and table format.
print(tabulate([['Alice', 24], ['Bob', 19]], headers=['Name', 'Age'], tablefmt='orgtbl'))
| Name | Age |
|--------+-------|
| Alice | 24 |
| Bob | 19 |
2. PrettyTable: https://pypi.python.org/...