Given two tables created and populated as follows:   CREATE TABLE dbo.envelope(id int, user_id int); CREATE TABLE dbo.docs(idnum int, pageseq int, doctext varchar(100));   INSERT INTO dbo.envelope VALUES   (1,1),   (2,2),   (3,3);   INSERT INTO dbo.docs(idnum,pageseq) VALUES   (1,5),   (2,6),   (null,0); What will the result be from the following query:   UPDATE docs SET doctext=pageseq FROM docs INNER JOIN envelope ON envelope.id=docs.idnum WHERE EXISTS (   SELECT 1 FROM dbo.docs   WHERE id=envelope.id ); Explain your answer.

Np Ms Office 365/Excel 2016 I Ntermed
1st Edition
ISBN:9781337508841
Author:Carey
Publisher:Carey
Chapter5: Working With Excel Tables, Pivottables, And Pivotcharts
Section: Chapter Questions
Problem 10RA
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Given two tables created and populated as follows:

 

CREATE TABLE dbo.envelope(id int, user_id int);

CREATE TABLE dbo.docs(idnum int, pageseq int, doctext varchar(100));

 

INSERT INTO dbo.envelope VALUES

  (1,1),

  (2,2),

  (3,3);

 

INSERT INTO dbo.docs(idnum,pageseq) VALUES

  (1,5),

  (2,6),

  (null,0);

What will the result be from the following query:

 

UPDATE docs SET doctext=pageseq FROM docs INNER JOIN envelope ON envelope.id=docs.idnum

WHERE EXISTS (

  SELECT 1 FROM dbo.docs

  WHERE id=envelope.id

);

Explain your answer.

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