{"id":194133,"date":"2024-11-13T04:02:21","date_gmt":"2024-11-12T20:02:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194133\/"},"modified":"2024-11-13T04:02:22","modified_gmt":"2024-11-12T20:02:22","slug":"%e4%b8%80%e8%b5%b7%e5%ad%b8%e7%bf%92mysql%e6%ba%90%e7%a2%bc%e7%ad%86%e8%a8%98%e4%b9%8b%e7%aa%ba%e8%a6%96%e7%b7%9a%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194133\/","title":{"rendered":"\u4e00\u8d77\u5b78\u7fd2MySQL\u6e90\u78bc\u7b46\u8a18\u4e4b\u7aba\u8996\u7dda\u7a0b"},"content":{"rendered":"<h1 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my_cursor CURSOR FOR SELECT * FROM my_table;\n    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;\n\n    OPEN my_cursor;\n\n    read_loop: LOOP\n        FETCH my_cursor INTO my_variable;\n        IF done THEN\n            LEAVE read_loop;\n        END IF;\n        -- \u8655\u7406\u6578\u64da\n    END LOOP;\n\n    CLOSE my_cursor;\nEND;\n<\/code><\/pre>\n<h2 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