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Entity Attribute Value Database vs. strict Relational Model Ecommerce
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What if you had a single table with indexes for text values 1-n, then in C# (in ram) map what you want to what you need. It would still work like an EAV, but the "matches" would be domain models. Sort of like a serialization, but you could use SQL ...
Storing Data in MySQL as JSON
... for directly in MySQL queries, but used when viewing forms (either from a table view or directly via a link). It's probably not ideal but it certainly makes it a lot quicker to implement and removes the need for an exorbitant amount of tables or table columns.
– Nick Bedford
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count(*) vs count(column-name) - which is more correct? [duplicate]
...hich values of column is not NULL, whereas COUNT(*) counts all rows of the table.
– PureSilence
Oct 3 '19 at 7:49
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How does grep run so fast?
...looks first
for the final letter of the target string, and uses a lookup table to
tell it how far ahead it can skip in the input whenever it finds a
non-matching character.
GNU grep also unrolls the inner loop of Boyer-Moore, and sets up the
Boyer-Moore delta table entries in such a way...
Undo scaffolding in Rails
...e db:rollback before you destroy your scaffold. This will destroy/drop the table if there is no other migration except the scaffold's migration before it.
– Yakob Ubaidi
May 8 '14 at 11:06
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Make outer div be automatically the same height as its floating content
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I know some people will hate me, but I've found display:table-cell to help in this cases.
It is really cleaner.
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Calculating moving average
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In data.table 1.12.0 new frollmean function has been added to compute fast and exact rolling mean carefully handling NA, NaN and +Inf, -Inf values.
As there is no reproducible example in the question there is not much more to addres...
Where are my postgres *.conf files?
... # analyze
#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
# (change requires re...
How to use count and group by at the same select statement
...atement.
Is there a way for this directly from sql?
For example, having a table with users I want to select the different towns and the total number of users
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UITableView - change section header color
How can I change color of a section header in UITableView?
31 Answers
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