QGIS/resources/function_help/json/ILIKE

{
  "name": "ILIKE",
  "type": "operator",
  "description": "Returns 1 if the first parameter matches case-insensitive the supplied pattern. LIKE can be used instead of ILIKE to make the match case-sensitive. Works with numbers also.",
  "arguments": [
    {"arg":"string/number","description":"string to search"},
    {"arg":"pattern","description":"pattern to find, you can use '%' as a wildcard, '_' as a single char and '\\\\' to escape."}
   ],
  "examples": [
    { "expression":"'A' ILIKE 'A'", "returns":"1"},
    { "expression":"'A' ILIKE 'a'", "returns":"1"},
    { "expression":"'A' ILIKE 'B'", "returns":"0"},
    { "expression":"'ABC' ILIKE 'b'", "returns":"0"},
    { "expression":"'ABC' ILIKE 'B'", "returns":"0"},
    { "expression":"'ABC' ILIKE '_b_'", "returns":"1"},
    { "expression":"'ABC' ILIKE '_B_'", "returns":"1"},
    { "expression":"'ABCD' ILIKE '_b_'", "returns":"0"},
    { "expression":"'ABCD' ILIKE '_B_'", "returns":"0"},
    { "expression":"'ABCD' ILIKE '_b%'", "returns":"1"},
    { "expression":"'ABCD' ILIKE '_B%'", "returns":"1"},
    { "expression":"'ABCD' ILIKE '%b%'", "returns":"1"},
    { "expression":"'ABCD' ILIKE '%B%'", "returns":"1"}
  ]
}