Question

我不知道该怎么做我想做的事希望在此示例中演示数据关系

UPDATE sym_entries_data_55'
SET value =  '46.00' 
WHERE (sym_entries_data_55.id = sym_entries_data_54.id)
AND (sym_entries_data_54.member_id = sym_entries_data_5.entry_id)
AND (sym_entries_data_5.username = 'namehere')

答案

UPDATE sym_entries_data_55, sym_entries_data_54, sym_entries_data_5
    SET sym_entries_data_55.value = '52.00'
    WHERE sym_entries_data_55.id = sym_entries_data_54.id
        AND sym_entries_data_54.member_id = sym_entries_data_5.entry_id
        AND sym_entries_data_5.username = 'namehere'

Answer 1

UPDATE sym_entries_data_55, sym_entries_data_54, sym_entries_data_5
    SET sym_entries_data_55.value = '46.00'
    WHERE sym_entries_data_55.id = sym_entries_data_54.id
        AND sym_entries_data_54.member_id = sym_entries_data_5.entry_id
        AND sym_entries_data_5.username = 'namehere'

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