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  • 提交给mysql java驱动的优化下个版本要发布了^_^

    Unsubscribe from updates to this bug at: https://bugs.mysql.com/77681
    
     Updated by:  Daniel che chung So
     Reported by: OCA Admin
     Category:    Connector/J
     Severity:    S3 (Non-critical)
    -Status:      In progress
    +Status:      Closed
     Version:     5.1.x
     OS:          Any
    
    [20 Aug 23:25] Daniel che chung So
    
    Added the following entry to the Connector/J 5.1.37 changelog:
    
    "The code for executing a REPLACE statement when
    rewriteBatchedStatements=true has been refactored by putting multiple
    batched statements into a single query, making it work more like an
    INSERT statement. This increases the efficiency for running REPLACE
    statements. Thanks to Jie Han for contributing the patch."
    
    ------------------------------------------------------------------------
    
    [21 Jul 9:17] jie han
    
    we have billions records transfer from offline to online ,  rewrite
    replace statement will save lots of bytes. and rewirte to one sql means
    don't need  explicitly begin transaction ,because one sql will execute
    in  a standalone transaction when autocommit is true,this save two
    request for every batch. where network is slow autocommit will save more
    time. hope rewrite replace statement will release in next version.
    
    ------------------------------------------------------------------------
    
    [20 Jul 17:27] Filipe Silva
    
    Bug#40561 is a duplicate of this.
    
    ------------------------------------------------------------------------
    
    [12 Jul 8:00] Umesh Umesh
    
    Hello!
    
    Thank you for the report and contribution.
    
    Thanks,
    Umesh
    
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  • 原文地址:https://www.cnblogs.com/xhan/p/4767733.html
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