SQL select roq code example

Example 1: sql select first row

-- NOTE: This is for Oracle/PLSQL only

-- > EXAMPLE
select * 
from CONSUMERS
where ROWNUM <= 1

/*
-- > SYNTAX
select * 
from {yourTable}
where ROWNUM <= {number-of-rows}

*/

Example 2: rownum in sql

SELECT ROWNUM, a.*
FROM (SELECT customers.*
      FROM customers
      WHERE customer_id > 4500
      ORDER BY last_name) a;

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