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Performing Inserts and Updates with Dapper
...anager.ConnectionStrings["myDbConnection"].ConnectionString))
{
string selectQuery = @"SELECT * FROM [dbo].[Customer] WHERE FirstName = @FirstName";
var result = db.Query(selectQuery, new
{
customerModel.FirstName
});
}
Code for CRUD:
using (IDbConnection db = new SqlConn...
Design Patterns: Factory vs Factory method vs Abstract Factory
...vide hotels or / and provide tourist attraction packages. Now, when a user selects next, the website needs to decide what objects it needs to create. Should it only create the travel or hotel object too.
Now, if you envision adding another website to your portfolio, and you believe that the same co...
Eclipse secure storage
...indows->preferences->then type "secure storage"
In the Contents tab, select [Default Secure Storage].
Click Delete.
Let Eclipse restart.
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MySQL DISTINCT on a GROUP_CONCAT()
I am doing SELECT GROUP_CONCAT(categories SEPARATOR ' ') FROM table . Sample data below:
6 Answers
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How to select the rows with maximum values in each group with dplyr? [duplicate]
I would like to select a row with maximum value in each group with dplyr.
6 Answers
6
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How do you declare an interface in C++?
...id descriptor(IBase * obj) {
obj->Describe();
}
int main(int argc, char** argv) {
std::cout << std::endl << "Tester Testing..." << std::endl;
Tester * obj1 = new Tester("Declared with Tester");
descriptor(obj1);
delete obj1;
std::cout << std::end...
Export to CSV via PHP
...ion: close");
}
function getSql()
{
// return you own sql
$sql = "SELECT id, date, params, value FROM sometable ORDER BY date;";
return $sql;
}
function getExportData()
{
$values = array();
$sql = $this->getSql();
if (strlen($sql) > 0)
{
$result = dbquery...
How do I replace NA values with zeros in an R dataframe?
... mutate(myCol1 = if_else(is.na(myCol1), 0, myCol1))
Note: This works per selected column, if we need to do this for all column, see @reidjax's answer using mutate_each.
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What is the best way to filter a Java Collection?
...without writing loops or inner classes:
List<Person> beerDrinkers = select(persons, having(on(Person.class).getAge(),
greaterThan(16)));
Can you imagine something more readable?
Disclaimer: I am a contributor on lambdaj
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MySQL dump by query
...
not mysqldump, but mysql cli...
mysql -e "select * from myTable" -u myuser -pxxxxxxxxx mydatabase
you can redirect it out to a file if you want :
mysql -e "select * from myTable" -u myuser -pxxxxxxxx mydatabase > mydumpfile.txt
Update:
Original post asked if...