How to tokenize a string and assign tokens to column in teradata?

@kadin 

To tokenize a string and assign tokens to columns in Teradata, you can use the STRTOK_SPLIT_TO_TABLE function. Here is an example of how to tokenize a string and assign tokens to columns in Teradata:

1. Create a table with the necessary columns to store the tokens. For example, suppose you have a table named token_table with columns id, string_col, and token_col.
2. Use the STRTOK_SPLIT_TO_TABLE function to tokenize the string and insert the tokens into the token_table:

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INSERT INTO token_table (id, token_col)
SELECT id, token
FROM (
    SELECT id, token
    FROM (
        SELECT id, token, ROW_NUMBER() OVER (PARTITION BY id ORDER BY token_order) AS rn
        FROM (
            SELECT id, token, token_order
            FROM TABLE(STRTOK_SPLIT_TO_TABLE(1, token_string, ',')) AS dt (id, token, token_order)
        ) t
    ) t2
    WHERE rn = 1
);

In this example:

• token_string is the string you want to tokenize.
• ',' is the delimiter to tokenize the string.
• id is the identifier of each string (if applicable).
• token_order is the order of the token in the string.
• token is the token extracted from the string.

1. After executing the above query, the tokens from the string will be inserted into the token_table, with each token assigned to the token_col column.

By following the steps above, you can tokenize a string and assign tokens to columns in Teradata.