how to check value present in table in sql if code example

Example 1: excel vba check if every substring in list are in string

'VBA function to check if ALL of a list of substrings is contained
'within a string:

Function AllIn(s$, ParamArray checks()) As Boolean
    Dim e
    For Each e In checks
        If 0 = InStrB(s, e) Then Exit Function
    Next
    AllIn = True
End Function
  
'-------------------------------------------------------------------
  
MsgBox AllIn("abcde", "d", c, "a")   '<--displays: True
MsgBox AllIn("abcde", "d", c, "z")   '<--displays: False

Example 2: sql constraint check value in list

ALTER TABLE <table>
ADD CONSTRAINT chk_val CHECK (col in ('yes','no','maybe'))

Example 3: python check if value in string

def is_value_in_string(value: str, the_string: str):
    return value in the_string.lower()