Syntax\n------\n\nCOLUMN_CHECK(dyncol_blob);\n\nDescription\n-----------\n\nCheck if dyncol_blob is a valid packed dynamic columns blob. Return value of 1 means the blob is valid, return value of 0 means it is not.\n\nRationale:\\\nNormally, one works with valid dynamic column blobs. Functions like COLUMN_CREATE, COLUMN_ADD, COLUMN_DELETE always return valid dynamic column blobs. However, if a dynamic column blob is accidentally truncated, or transcoded from one character set to another, it will be corrupted. This function can be used to check if a value in a blob field is a valid dynamic column blob.\n\nURL: https://mariadb.com/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_check