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How do I do top 1 in Oracle?
...inal query doesn't have an ORDER BY, nor does it return all columns in the table.
– OMG Ponies
Aug 12 '10 at 15:37
I s...
Image inside div has extra space below the image
...lex; }
#wrapper { display: inline-flex; }
Using display: block, table, flex and inherit
#wrapper img { display: block; }
#wrapper img { display: table; }
#wrapper img { display: flex; }
#wrapper img { display: inherit; }
...
SQL multiple column ordering
... @NickBenes ...or you could say: it sorts by column2 and then performs STABLE sorting by column1. This is more clear for people that knows what stable sorting is.
– Atom
Oct 3 '16 at 13:49
...
LINQ Single vs First
...nd SingleOrDefault() but that's a different question.
Take, for example, a table that stores Customers in different languages using a Composite Key ( ID, Lang ):
DBContext db = new DBContext();
Customer customer = db.Customers.Where( c=> c.ID == 5 ).First();
This code above introduces a possible...
Only one expression can be specified in the select list when the subquery is not introduced with EXI
...r side of the IN. So the query needs to be of the form:
SELECT * From ThisTable WHERE ThisColumn IN (SELECT ThatColumn FROM ThatTable)
You also want to add sorting so you can select just from the top rows, but you don't need to return the COUNT as a column in order to do your sort; sorting in the...
Index (zero based) must be greater than or equal to zero
...Code:
string name="my name";
string age=25;
String.Format(@"Select * from table where name='{1}' and age={1}" +name, age);
//Right Code:
string name="my name";
string age=25;
String.Format(@"Select * from table where name='{1}' and age={1}" , name, age);
...
How to float 3 divs side by side using CSS?
...
The modern way is to use the CSS flexbox, see support tables.
.container {
display: flex;
}
.container > div {
flex: 1; /*grow*/
}
<div class="container">
<div>Left div</div>
<div>Middle div</div>
<div>Right div<...
Unique combination of all elements from two (or more) vectors
...
Missing in this r-faq overview is the CJ-function from the data.table-package. Using:
library(data.table)
CJ(a, b, unique = TRUE)
gives:
a b
1: ABC 2012-05-01
2: ABC 2012-05-02
3: ABC 2012-05-03
4: ABC 2012-05-04
5: ABC 2012-05-05
6: DEF 2012-05-01
7: DEF 2012-0...
Python str vs unicode types
...is 0x1F602.
You can look up the Unicode numbers of all characters in this table. In particular, you can find the first three characters above here, the arrow here, and the emoji here.
These numbers assigned to all characters by Unicode are called code points.
The purpose of all this is to provide...
Delimiters in MySQL
...* Inside the procedure, individual statements terminate with ; */
CREATE TABLE tablea (
col1 INT,
col2 INT
);
INSERT INTO tablea
SELECT * FROM table1;
CREATE TABLE tableb (
col1 INT,
col2 INT
);
INSERT INTO tableb
SELECT * FROM table2;
/* whole procedure ...