Sql updating a table from itself

Message Time= SELECT MAX(Message Time) FROM Item Log WHERE Item ID=F. Taking out the criteria so that all 2500 rows updated took 40 seconds.

bathroom-blowjob

I had to do a very simple Microsoft SQL query in which I wanted to update some of the values in a row from a row in the same table.

Even if the documentation says you can specify a CTE without declaring the column names, I couldn't do it in this situation, I don't know why.

I admit I only tried the CTE solution for a minute before discarding it as too verbose.

Sebastian covers a technique for this in a recent blog post: sqlity.net/en/2867/update-from-select This will tend to work across almost all DBMS which means learn once, execute everywhere. Col2 AS _Col2 FROM T1 JOIN T2 ON T1= T2/*Where clause added to exclude rows that are the same in both tables Handles NULL values correctly*/ WHERE EXISTS(SELECT T1. I know this is old, but just wanted to say this one worked for me.

If that is more important to you than performance you might prefer this answer, especially if your update is a one off to correct some data. My server wont allow FROM to be used in an UPDATE statement. This may be a niche reason to perform an update (for example, mainly used in a procedure), or may be obvious to others, but it should also be stated that you can perform an update-select statement without using join (in case the tables you're updating between have no common field).But because this query is relatively slow, I have added 2 status columns, and I want to UPDATE the columns with the calculated statuses well after the events happen. I hope the solution you are looking for can be served up using MERGE statement.

ozpuppets.ru

76 Comments

  1. Pingback:

  2. eric   •  

    , I Love Jesus Christ, MMA World, Boxing Leader, Swagliana, Blade City, Love HIP HOP follow GK Beats, Graffiti Kings, KB Live 15, Live Stream Football With Myanmar 24h, PUMA Football, Full service girls, Sexy Bigo Live, Live Cam Girls Video Chat Room, Jimatic Photography, Salai Mnai Thang, 오더쿠, ที่นี่บราซิล, Ramleng Chin, Bundesliga Official, Single Mine, LIVE Football, chhemdam.com, Chin Hill News, The Chin Mirror - Daily World News & Pathian Bia, Sarah Wayne Callies Brasil, Prison Break Brasil, Michael Jordan Fans, Fast 8 Lovers, Dwayne Johnson Memes, Fast & Furious FC, The Rock - Dwayne Johnson, Jason Statham Memes, Dwayne Johnson Memes, Vin Diesel Memes, Lumte Thingkawn Hlivua, Football Daily Goal, Manchester United Fans - Mizo, HAMMY T.

  3. eric   •  

    more Johnny June Mason, Jr.: 01/03/69, 5'8", 150 lbs.

  4. eric   •  

    = new Date(); Time((new Date()).value Of() - 1000*60*60*24*90); self.new_streams = (Full Year() * 10000 (Month() 1) * 100 Date()); self.bwidth = window.inner Width; self.online = /* this overrides everything for males only cobrands */ var malefilters = self.my_filter = function (el) var attach_studio = ''; var region = ''; var reg_boost = 10; self.cobrand_boosts = var voy_time = ; var priv_time = ; self.gender_filter_cookie_name = 'webcam_gender_filter'; self.set_my_gender_cookie = function (gender) self.check_gender = function()(); self.get_my_gender_cookie = function () self.debugg = 0; self.show_ts = 1; var cams = ; self.won_from_json = function (a) , 'o' : function (a, b) , 's' : function (a, b) , 'v' : function(a,b) , 'z' : function(a,b) , 'F' : function(a,b) , 'h' : function(a,b) , 'G' : function(a,b) } self.dislike = function (a,e) var ref = ; for (var i in cat_counts) var myyank = yank(parent); for (var i in ref) myyank(); } } self.won_url = '/lvswon.cgi?

  5. eric   •  

    He already had two children already and even though in the first instance he said he wanted to have another with me, I knew that he had started to change his mind 3 months in as I could sense it and I ignored the signs as I didn't want to face the consequences of that outcome.

  6. eric   •  

    It is the cue for the entire school to launch into I Vow To Thee My Country.

  7. eric   •  

    , Top threads Free online dating for everyone including seniors, White singles, Black singles, Asian, Latino, Latina, and everyone else.

  8. eric   •  

    In 2004, it was decided to change the Association’s name to more accurately reflect its vision, which was to stop all relationship abuse.

  9. eric   •  

    We will automatically add 60 free chat minutes to the phone number you are calling from- so make sure you are on the phone you want to use.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>