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Home/ Questions/Q 8594135
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Editorial Team
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Editorial Team
Asked: June 12, 20262026-06-12T00:08:03+00:00 2026-06-12T00:08:03+00:00

I have a data table which the primary key is formatted like M00001, M00002,

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I have a data table which the primary key is formatted like M00001, M00002, M00003 … so on. They are all string type. Is there any way to query the database to find the max primary key?

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  1. Editorial Team
    Editorial Team
    2026-06-12T00:08:03+00:00Added an answer on June 12, 2026 at 12:08 am
    select max(id)
    from t
    

    If the RDBMS does not support max() then:

    select id
    from t
    order by id desc
    limit 1
    
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