Does a DB wih ROWIDs serve the records in ROWID-sequence?

That is a SQL question, not a database question. Databases store data, and order can be very important. SQL is used to retrieve data (via the SQL engine in the RDBMS), and displays it in no specific order, unless told do so.

But anyway, does ROWID affect retrieval? IIUC, it most certainly does. The table (assuming an index is not used in the query) points to the first data block, which most likely contains the first record, and chains from there. A database that did otherwise would likely be inefficient.

In reply to Re^6: Increase a value inside MySQL query using perl by chacham
in thread Increase a value inside MySQL query using perl by AhmedABdo

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