How to get last row of a table in SQL. If one row in table not show 1st row. Only show empty value

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How to get last row of a table in SQL.
if one row in table not show 1st row.
only show empty value

What I have tried:

$result2 = mysql_query("SELECT  max(result_date) as result_date FROM attends where result_date_only='$datefrom' and st_id=$st_id");

this query show ... one row in table show max row and min row is same

Posted 18-Dec-17 7:04am

prabhakarcs

Updated 19-Dec-17 10:20am

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RossMW 18-Dec-17 14:02pm

I appreciate english may not be your native language, but Im afraid I struggle to understand exactly what you are trying to do, and what the problem or issue is. Can you please elaborate

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ZurdoDev · Answer 1 · 2017-12-19T10:20:00

You asked how to show a row but then your sql is only getting a single value. Assuming you want the max date from the table or NULL if there is only a single record one way to do it is like this:

SQL

IF (SELECT COUNT(*) FROM table) <= 1
  BEGIN
    SELECT NULL AS myDate
  END
ELSE
  BEGIN
    SELECT MAX(date_field) AS myDate
    FROM table
  END

Put this in a stored procedure, don't try to do it as inline sql in php.

Quote:
one row in table show max row and min row is same

Which is perfectly fine because that IS the correct data.