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CREATE TABLE tab1 ( `tx_id` INTEGER, `trade_id` INTEGER ); INSERT INTO tab1 (`tx_id`, `trade_id`) VALUES ('100', '11'), ('99', '11'), ('98', '11'), ('97', '10'), ('96', '10'), ('95', '9'), ('94', '9'), ('93', '8');
SELECT t1.* FROM tab1 t1 JOIN (SELECT DISTINCT `trade_id` FROM tab1 ORDER BY `trade_id` DESC LIMIT 2) t2 ON t1.`trade_id` = t2.`trade_id`
tx_id
trade_id
100
11
99
11
98
11
97
10
96
10