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count ( haystack_string_expression , needle_string_expression )
count ( haystack_string_expression , needle_string_expression , boolean_expression)

returns integer_expression

Return the count of the string needle in the string haystack. You may also specify an optional third value, a boolean value to specify that the search will treat upper and lower case letters the same.

print count("Hello", "lo")
print count("Buffalo buffalo buffalo.","BUFFALO",true)

will display

1
3