大约有 300 项符合查询结果（耗时：0.0254秒） [XML]
In MySQL, how to copy the content of one table to another table within the same database?
...d copy the content in a single shot, just use the SELECT:
CREATE TABLE new_tbl SELECT * FROM orig_tbl;
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Simple way to transpose columns and rows in SQL?
... the (re)PIVOT operations.
MS SQL Server 2012 Schema Setup:
create table tbl (
color varchar(10), Paul int, John int, Tim int, Eric int);
insert tbl select
'Red' ,1 ,5 ,1 ,3 union all select
'Green' ,8 ,4 ,3 ,5 union all select
'Blue' ,2 ,2 ,9 ,1;
Query 1:
select *
from tbl
unp...
What is the difference between JSON and Object Literal Notation?
...cape Communications)) and JScript (Microsoft Corporation).). Though before 1994, ECMA was known as "European Computer Manufacturers Association", after 1994, when the organization became global, the "trademark" "Ecma" was kept for historical reasons.
ECMAScript is the language, whereas JavaScript, ...
How to create a custom attribute in C#
...asani",
Id = 1,
DateOfBirth = new DateTime(1994, 8, 15),
Department = "Computer Engineering",
HireDate = new DateTime(2018, 1, 1),
Salary = 10000
};
var math = new Lesson(1, "Math", DateTime.Today...
Oracle query to fetch column names
... ( It works on 11g and it returns all column name from a table , here test_tbl is the table name and user_tab_columns are user permitted table's columns )
select COLUMN_NAME from user_tab_columns
where table_name='test_tbl';
...
How can you integrate a custom file browser/uploader with CKEditor?
...foreach( $images as $v)
echo sprintf("\t'%s',\n", $v);
?>];
tbl = document.getElementsByTagName('table')[0];
td = tbl.getElementsByTagName('td');
// fill the empty table cells with data
for(var i=0; i < images.length; i++)
td[i].innerHTML = images[i];
// event handl...
Fastest check if row exists in PostgreSQL
...
How about simply:
select 1 from tbl where userid = 123 limit 1;
where 123 is the userid of the batch that you're about to insert.
The above query will return either an empty set or a single row, depending on whether there are records with the given useri...
When should I use cross apply over inner join?
...ke a godsend in such situations: you just add a simple CROSS APPLY (select tbl.value + 1 as someFormula) as crossTbl and voilà! Your new field is now ready for use practically like it had always been there in your source data.
Values introduced through CROSS APPLY can...
be used to create one or...
Wrap text in tag
...
.tbl {
table-layout:fixed;
border-collapse: collapse;
background: #fff;
}
.tbl td {
text-overflow:ellipsis;
overflow:hidden;
white-space:nowrap;
}
Credits to http://www.blakems.com/archives/000077.h...
How to change the default charset of a MySQL table?
... columns to a new character set, use a statement like this:
ALTER TABLE tbl_name CONVERT TO CHARACTER SET charset_name;
So query will be:
ALTER TABLE etape_prospection CONVERT TO CHARACTER SET utf8;
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