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SQL query: merge 2 tables

Discussion in 'Information Technology' started by Anakin Moonwalker, Nov 17, 2005.

  1. Anakin Moonwalker

    Anakin Moonwalker
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    Guest

    I have 2 tables:

    TableA
    item desc
    apple fruit
    dog animal

    TableB
    item desc
    cat animal
    egg food

    What is the SQL query to merge the two tables, and save it into TableC? This
    should be the output:
    item desc
    apple fruit
    dog animal
    cat animal
    egg food
     
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  3. Anakin Moonwalker

    Anakin Moonwalker
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    Guest

    This works:


    Select item, desc from TableA
    UNION
    Select item, desc from TableB


    "Anakin Moonwalker" wrote:

    > I have 2 tables:
    >
    > TableA
    > item desc
    > apple fruit
    > dog animal
    >
    > TableB
    > item desc
    > cat animal
    > egg food
    >
    > What is the SQL query to merge the two tables, and save it into TableC? This
    > should be the output:
    > item desc
    > apple fruit
    > dog animal
    > cat animal
    > egg food
    >
     
  4. Anakin Moonwalker

    Anakin Moonwalker
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    Guest

    Problem though...
    How do I save it to a 3rd table named TableC?

    Adding "INTO TableC" in the 1st row doesn't work.

    "Anakin Moonwalker" wrote:

    > This works:
    >
    >
    > Select item, desc from TableA
    > UNION
    > Select item, desc from TableB
    >
    >
    > "Anakin Moonwalker" wrote:
    >
    > > I have 2 tables:
    > >
    > > TableA
    > > item desc
    > > apple fruit
    > > dog animal
    > >
    > > TableB
    > > item desc
    > > cat animal
    > > egg food
    > >
    > > What is the SQL query to merge the two tables, and save it into TableC? This
    > > should be the output:
    > > item desc
    > > apple fruit
    > > dog animal
    > > cat animal
    > > egg food
    > >
     
  5. Smartin

    Smartin
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    Guest

    Anakin Moonwalker wrote:
    > I have 2 tables:
    >
    > TableA
    > item desc
    > apple fruit
    > dog animal
    >
    > TableB
    > item desc
    > cat animal
    > egg food
    >
    > What is the SQL query to merge the two tables, and save it into TableC? This
    > should be the output:
    > item desc
    > apple fruit
    > dog animal
    > cat animal
    > egg food
    >


    If TableC is already built, these two separate queries would do it (but
    there's probably a better way!)

    INSERT INTO TableC SELECT Item, Desc FROM TableA;
    INSERT INTO TableC SELECT Item, Desc FROM TableB;

    --
    Smartin
     
  6. John Vinson

    John Vinson
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    Guest

    On Wed, 16 Nov 2005 17:39:03 -0800, "Anakin Moonwalker"
    <AnakinMoonwalker@discussions.microsoft.com> wrote:

    >Problem though...
    >How do I save it to a 3rd table named TableC?
    >


    SMartin's two successive append queries is one way; or, you can create
    an Append query based on the saved Union query; or you can use a
    Subquery:

    INSERT INTO TableC
    SELECT Item, Desc FROM
    (SELECT Item, Desc FROM TableA
    UNION
    SELECT Item, Desc FROM TableB);

    John W. Vinson[MVP]
     

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