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This page describes the FIRST2 function in Lenses SQL.
FIRST2(strExpr)
Anonymize the value and only keep the first two characters.
Available in:
Sample code:
USE `kafka`; SELECT FIRST2(first_name) AS first_name_hidden, first_name FROM users-events LIMIT 1;
Output:
{ "value": { "first_name_hidden": "Ch*****", "first_name": "Charles" } }
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