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mysql-sql 根据条件update数据

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Release： 2016-06-06 09:37:56
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mysqloraclesql

有两个表分别为tb_child(child_id,name),tb_cdc_child(child_id,username)tb_child的数据为(t1,jack)(t2,mary)两条，tb_cdc_child的数据为(t1,lee)(t2,tom)两条。现需做update操作,将tb_child中child_id与tb_cdc_child中child_id相同的那条数据的name字段更新为tb_cdc_child中对应数据的username字段。即更新过后的tb_child的数据变为(t1,lee)(t2,tom)能否用一句sql实现该功能

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mysql oracle sql
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