大约有 6,100 项符合查询结果（耗时：0.0199秒） [XML]
How do you manually execute SQL commands in Ruby On Rails using NuoDB
...n.execute("foo")
with "foo" being the sql statement( i.e. "SELECT * FROM table").
This command will return a set of values as a hash and put them into the results variable.
So on my rails application_controller.rb I added this:
def execute_statement(sql)
results = ActiveRecord::Base.connectio...
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 can I group by date time column without taking time into consideration
...s fine in oracle
select to_char(columnname, 'DD/MON/yyyy'), count(*) from table_name group by to_char(createddate, 'DD/MON/yyyy');
share
|
improve this answer
|
follow
...
How to get the error message from the error code returned by GetLastError()?
...t implementing exception safety guarantees.
– IInspectable
Aug 8 '17 at 10:20
|
show 5 more comments
...
Rails new vs create
...fferently.
An HTTP GET to /resources/new is intended to render a form suitable for creating a new resource, which it does by calling the new action within the controller, which creates a new unsaved record and renders the form.
An HTTP POST to /resources takes the record created as part of the ne...
jQuery remove options from select
...
if your dropdown is in a table and you do not have id for it then you can use the following jquery:
var select_object = purchasing_table.rows[row_index].cells[cell_index].childNodes[1];
$(select_object).find('option[value='+site_name+']').remove();
...
Is there any difference between GROUP BY and DISTINCT
...river :: GroupBy : Distinct and screw => get list of unique values in a table column)
share
|
improve this answer
|
follow
|
...
How to use phpexcel to read data and insert into database?
...';
echo ' and ' . $highestRow . ' row.';
echo '<br>Data: <table border="1"><tr>';
//----- loop from all rows -----
for ($row = 1; $row <= $highestRow; ++ $row)
{
echo '<tr>';
echo "<td>".$row."</td>";
//--- read each...
SQL - Select first 10 rows only?
...
In SQL server, use:
select top 10 ...
e.g.
select top 100 * from myTable
select top 100 colA, colB from myTable
In MySQL, use:
select ... order by num desc limit 10
share
|
improve this ...
Why can't I use switch statement on a String?
...nse, they are used as an index (after subtracting the lowest value) into a table of instruction pointers—the tableswitch instruction.
If the constants are sparse, a binary search for the correct case is performed—the lookupswitch instruction.
In de-sugaring a switch on String objects, both i...