Comma-Delimited List with "and" concatenated before Last Element in Oracle SQL -

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I am using LISTAGG to create a comma-delimited list for a report, but I have "and" the last element First of all, there is just my output for 3 different cases: 

  First, second, third first, second first

but now the desired output is :

I had thought of doing a case when he examines the count and if If 2 is, then 'and' as the delimiter, but how can I go about doing this for more than 2 elements?

Thanks

You can try regexp_replace:

< Select pre-> duplex to regexp_replace ('first, second, third', ', ([^,] +) $', 'and' 1 ');

, ([^,] +) until the end of the last comma + string and anything else searches for a comma and changes it with "and" First expression

(For example, if your comma does not include a comma then this should work)

Full example: 

  select regexp_replace ( Select the name 'first' from the double association between listagg (name, ',') group (sequence by name), ', ([^,] +) $', 'and' 1 ') 'Third' from dual);

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