10.15.9 The end_markers_in_json System Variable

When reading a very large JSON document, it can be difficult to pair its closing bracket and opening brackets; setting end_markers_in_json=ON repeats the structure's key, if it has one, near the closing bracket. This variable affects both optimizer traces and the output of EXPLAIN FORMAT=JSON.

Note

If end_markers_in_json is enabled, the repetition of the key means the result is not a valid JSON document, and causes JSON parsers to throw an error.