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sql update case when then知識摘要

(共計:20)
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    30 Aug 2007 ... UPDATE TABLE SET. A (only if its null)= B.a ,X= B.x ... I want to set the age to Null if it is less than 18

  • 青蛙跳跳: SQL UPDATE CASE WHEN 的使用方法
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    2013年4月2日 - I want to use CASE statement to update some records in sql server 2005 ... TestStudents SET LASTNAME = ( CASE WHEN (LASTNAME ...

  • T-SQL: Using a CASE in an UPDATE statement to update ...
    2011年1月28日 - UPDATE table SET (CASE (CONDITION) WHEN TRUE THEN ... The only way to do specifically what you're asking is to use dynamic SQL.

  • Use CASE in the UPDATE statement : Case « Select Query ...
    p1 Search Engine 120000 p2 Programming 95000 p3 SQL 186500 (3 rows affected) 1> 2> -- Use CASE in the UPDATE statement. 3> 4> UPDATE project SET ...

  • Head First SQL: Hands-On SQL UPDATE/SET/CASE
    Hands On SQL. Page 24: UPDATE/SET/CASE. Try updating movie_table with the statements on page 239. UPDATE movie_table SET category = 'drama' where ...

  • CASE (Transact-SQL) - MSDN - Microsoft
    CASE 可以用在允許有效運算式的任何陳述式或子句中。 例如,您可以在SELECT、UPDATE、DELETE 和SET 之類的陳述式,以及select_list、IN、WHERE、ORDER ...

  • 亞肯多斯的隨想筆記: SQL Update 特殊寫法
    2009年3月9日 - 利用Case When 選擇性的update 欄位內容(Oracle 8.1.7, MsSQL, MySQL ... SQL> update t1 set class = (case when class is null then 'NullValue' ...

  • Trans News Updates, by Lynn Conway - Artificial Intelligence Lab
    "Aly is a pretty 17-year-old who talks easily about being transgender. It is impossible to guess that she was born male; her facial expressions and the grace with which she moves are typically female. "I knew, as early as when I was three or four, that I

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