大约有 37,000 项符合查询结果（耗时：0.0443秒） [XML]
Google App Engine: Is it possible to do a Gql LIKE query?
...
BigTable, which is the database back end for App Engine, will scale to millions of records. Due to this, App Engine will not allow you to do any query that will result in a table scan, as performance would be dreadful for a well...
SQL injection that gets around mysql_real_escape_string()
...:
$iId = mysql_real_escape_string("1 OR 1=1");
$sSql = "SELECT * FROM table WHERE id = $iId";
mysql_real_escape_string() will not protect you against this.
The fact that you use single quotes (' ') around your variables inside your query is what protects you against this. The following is als...
DbEntityValidationException - How can I easily tell what caused the error?
...k whether the property's value is out of range, like when you designed the table. Table_Column_UserName is varchar(20). But, in EF, you entered a value that longer than 20.
Or, in other cases, if the column does not allow to be a Null.
So, in the validation process, you have to set a value to the n...
MySQL: Enable LOAD DATA LOCAL INFILE
...
like this:
load data local infile '/home/tony/Desktop/2013Mini.csv' into table Reading_Table FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n';
share
|
improve this answer
...
Why is isNaN(null) == false in JS?
...is a value of the numeric data type representing an undefined or unrepresentable value, especially in floating-point calculations.
In most cases we think the answer to "is null numeric?" should be no. However, isNaN(null) == false is semantically correct, because null is not NaN.
Here's the algor...
c# datatable insert column at position 0
does anyone know the best way to insert a column in a datatable at position 0?
3 Answers
...
How do I read CSV data into a record array in NumPy?
...contents of a CSV file into a record array, much in the way that R's read.table() , read.delim() , and read.csv() family imports data to R's data frame?
...
UITableView Setting some cells as “unselectable”
How can I set the UITableView's cell property to be unselectable? I don't want to see that blue selection box when the user taps on the cell.
...
What does (x ^ 0x1) != 0 mean?
...hex notation
x ^ 0x1 will invert the last bit of x (refer to the XOR truth table in the link above if that's not clear to you).
So, the condition (0 != ( x ^ 0x1 )) will be true if x is greater than 1 or if the last bit of x is 0. Which only leaves x==1 as a value at which the condition will be fa...
Are custom elements valid HTML5?
...where. See also the WebComponents.js github page & web browser support table.
share
|
improve this answer
|
follow
|
...