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How to get string after character oracle

I have VP3 - Art & Design and HS5 - Health & Social Care, I need to get string after '-' in Oracle. Can this be achieved using substring?

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Answer

For a string operation as simple as this, I might just use the base INSTR() and SUBSTR() functions. In the query below, we take the substring of your column beginning at two positions after the hyphen.

SELECT
    SUBSTR(col, INSTR(col, '-') + 2) AS subject
FROM yourTable

We could also use REGEXP_SUBSTR() here (see Gordon’s answer), but it would be a bit more complex and the performance might not be as good as the above query.

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