Looking for a string within a string
If you need to check whether an expression exists within a string, you can use the CHARINDEX() function. This function returns the position of the expression you are searching within the string.
The syntax is:
CHARINDEX(expression_to_find, expression_to_search [, start_location])
In this exercise, you are going to use the voters table to search for information about the voters whose names meet several conditions.
Это упражнение является частью курса
Functions for Manipulating Data in SQL Server
Интерактивное практическое упражнение
Попробуйте выполнить это упражнение, дополнив этот пример кода.
SELECT
first_name,
last_name,
email
FROM voters
-- Look for the "dan" expression in the first_name
WHERE ___ > 0;