{
  "name": "longest_common_substring",
  "type": "function",
  "groups": ["Fuzzy Matching"],
  "description": "Returns the longest common substring between two strings. This substring is the longest string that is a substring of the two input strings. For example, the longest common substring of \"ABABC\" and \"BABCA\" is \"BABC\". The substring is case sensitive.",
  "arguments": [{
    "arg": "string1",
    "description": "a string"
  }, {
    "arg": "string2",
    "description": "a string"
  }],
  "examples": [{
    "expression": "longest_common_substring('ABABC','BABCA')",
    "returns": "'BABC'"
  }, {
    "expression": "longest_common_substring('abcDeF','abcdef')",
    "returns": "'abc'"
  }, {
    "expression": "longest_common_substring(upper('abcDeF'),upper('abcdex'))",
    "returns": "'ABCDE'"
  }],
  "tags": ["longest", "common", "input", "sensitive", "case", "substring", "strings"]
}