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检查两个 JSON 数组是否有重叠,存在共有元素时返回 true,否则返回 false。

JSON_ARRAY_OVERLAP(<json_array1>, <json_array2>)

该函数返回布尔值:

  • 两个 JSON 数组之间至少有一个共有元素时,返回 true,
  • 没有共有元素时,返回 false。
SELECT json_array_overlap(
'["apple", "banana", "cherry"]'::JSON,
'["banana", "kiwi", "mango"]'::JSON
);
-[ RECORD 1 ]-----------------------------------
json_array_overlap('["apple", "banana", "cherry"]'::VARIANT, '["banana", "kiwi", "mango"]'::VARIANT): true
SELECT json_array_overlap(
'["grape", "orange"]'::JSON,
'["apple", "kiwi"]'::JSON
);
-[ RECORD 1 ]-----------------------------------
json_array_overlap('["grape", "orange"]'::VARIANT, '["apple", "kiwi"]'::VARIANT): false