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POMerge multiple rows into one?
 

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  1. POMerge multiple rows into one?
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    <p>I have one stage table '<code>STAGE_TABLE</code>' which includes following values (columns are varchar2 except ids) -</p> <pre><code>+------------------------------------------------------------------------------------------------------------------------- ¦ STAGE_ID ¦ EMP_ID ¦ ATTR1_OLD_VAL ¦ ATTR1_NEW_VAL ¦ ATTR2_OLD_VAL ¦ ATTR2_NEW_VAL ¦ ATTR3_OLD_VAL ¦ ATTR3_NEW_VAL ¦ ¦-----------+------------+---------------+---------------+---------------+---------------+---------------+---------------¦ ¦ 1 ¦ E001 ¦ xyz ¦ pqr ¦ mmm ¦ nnn ¦ zzz ¦ aaa ¦ ¦ 2 ¦ E001 ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ 3 ¦ E001 ¦ pqr ¦ abc ¦ xxx ¦ yyy ¦ ¦ ¦ ¦ 4 ¦ E002 ¦ aaa ¦ ccc ¦ bbb ¦ ttt ¦ ¦ ¦ ¦ 5 ¦ E002 ¦ ¦ ¦ ¦ ¦ fff ¦ ppp ¦ ¦ 6 ¦ E002 ¦ ¦ ¦ kkk ¦ jjj ¦ ¦ ¦ +------------------------------------------------------------------------------------------------------------------------- </code></pre> <p>I want to merge multiple rows from above table belonging to same employee into one -</p> <pre><code>+------------------------------------------------------------------------------------------------------------- ¦ EMP_ID ¦ ATTR1_OLD_VAL ¦ ATTR1_NEW_VAL ¦ ATTR2_OLD_VAL ¦ ATTR2_NEW_VAL ¦ ATTR3_OLD_VAL ¦ ATTR3_NEW_VAL ¦ ¦------------+---------------+---------------+---------------+---------------+---------------+---------------¦ ¦ E001 ¦ pqr ¦ abc ¦ xxx ¦ yyy ¦ zzz ¦ aaa ¦ ¦ E002 ¦ aaa ¦ ccc ¦ kkk ¦ jjj ¦ fff ¦ ppp ¦ +------------------------------------------------------------------------------------------------------------- </code></pre> <p>I came to know about MERGE statement but not sure if it will work. I am new to oracle pl/sql.</p>
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. USParag Meshram
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. COWhat do you mean saying "merge"? What would be your result depending on given data?
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      1. USHamlet Hakobyan
    2. CObecause i am merging data from multiple columns into single row.
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      1. USParag Meshram
    3. COTo understand your question: Why is ATTR1_OLD_VAL = pqr and not xyz? Because STAGE_ID=3 > STAGE_ID=1 ?
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      1. USwolφi
 

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