tsql - SQL Server 2000 Update based on nested SELECT with TOP -

-

i trying update sql table x amount of rows ordered query, x balance of 100000 - previous result. using rowcount limit number of results due x being parameter don't think works.

can suggest fix or alternative without cursors?

declare @top int set @top = 100000 - @countrecords  set rowcount  @top   update      updatetable set      updatefield = 'somevalue'      id in     (         select             top 100% id                      selecttable                       (selectfield1 null) ,                     (selectfielddate not null)             order                      selectfielddate                              )  set rowcount 0

set rowcount applies intermediate results can misleading

if load temp table, can bypass separating update 2 steps

declare @top int set @top = 100000 - @countrecords  set rowcount  @top   select id #foo      selecttable       (selectfield1 null) ,             (selectfielddate not null) order      selectfielddate                  set rowcount 0  update      updatetable set      updatefield = 'somevalue'      id in     (         select id #foo     )

Comments

Post a Comment

Popular posts from this blog

javascript - Enclosure Memory Copies -

-
function myclass() { //lots , lots of vars , code here. this.bar = function() { //do numerous enclosed myclass vars } this.foo = function() { alert('hello'); //don't enclosed variables. } } each instance of myclass gets own copy of bar , foo, why prototyped methods use less memory. however, know more memory use of inner methods. it seems obvious me (1) below must true. agree? not distinct myclass instances have own distinct copies of bar, must have own distinct copies of myclass enclosure. (or else how bar method keep myclass variables straight on per instance basis?) now (2) question i'm after. since inner foo method doesn't use in myclass enclosure natural qustion is: javascript smart enough not keep myclass enclosure in memory use of foo? this depend entirely on implementation not language. naive implementations keep far more around others. answer true e.g. v8 (chrome's js engine) may not true spider...
Read more

php - Replacing tags in braces, even nested tags, with regex -

-
example preg_replace('/\{[a-za-z.,\(\)0-9]+\}/', 'replaced', 'lorem ipsum dolor sit {tag1({tag2()})}, consectetur adipiscing elit.'); the result: lorem ipsum dolor sit {tag1(replaced)}, consectetur adipiscing elit. question as can see "tag2" has been replaced, want replace "tag1" know how can this? (in cases might this: {tag1({tag2({tag3()})})}) , on.) btw using preg_replace_callback, easier show preg_replace here site can test code: http://www.spaweditor.com/scripts/regex/index.php you need add curly braces character set. here's pattern used: /\{[a-za-z.,\(\)\{\}0-9]+\}/ and here result: "lorem ipsum dolor sit replaced, consectetur adipiscing elit."
Read more