Yes, but when you UNION that query with others it gets a bit more
complicated
...
If you prefer the latter syntax, you can use mysql_fetch_object().
Ben
Bless you Ben!!
That last post of yours led to my first decent dose of real
significant SQL-syntax understanding since I started writing more than
the *simplest* of SQL statements which I had gleaned from an intro PHP
book. Your time will not go to waste! Thank you!
I got it performing as expected. But there is one remaining thing
that is mysterious to me. It will be easiest to explain/ask by
showing my code and the result:
this:
-----------------------------------------------------
$query = "SELECT COUNT(*) AS `CountUniqueDatesInMyTbl`,
date(solarLandingDateTime) AS `uniqueDate`, 't7solar_landing' AS
`tableAlias` FROM t7solar_landing GROUP BY DATE(solarLandingDateTime)
UNION ALL SELECT count(*) AS `CountUniqueDatesInMyTbl`,
date(solarAweberConfDateTime) AS `uniqueDate`, 'aweber_7solar_confirm'
AS `tableAlias` FROM aweber_7solar_confirm GROUP BY
DATE(solarAweberConfDateTime) UNION ALL SELECT count(*) AS
`CountUniqueDatesInMyTbl`, date(solarAWDateTime) AS `uniqueDate`,
'aweber_7solar_aw' AS `tableAlias` FROM aweber_7solar_aw GROUP BY
DATE(solarAWDateTime) ";
while { ...
echo htmlentities($uniqueDateROW['uniqueDate'])." --------
".htmlentities($uniqueDateROW['CountUniqueDatesInMyTbl'])." --------
".htmlentities($uniqueDateROW['tableAlias'])."<br />\n";
-----------------------------------------------------
returns this:
2009-07-28 -------- 5 -------- t7solar_landing
2009-07-29 -------- 1 -------- t7solar_landing
2009-08-02 -------- 2 -------- t7solar_landing
2009-08-03 -------- 3 -------- t7solar_landing
2009-08-04 -------- 2 -------- t7solar_landing
2009-07-28 -------- 2 -------- aweber_7solar_confirm
2009-07-29 -------- 1 -------- aweber_7solar_confirm
2009-07-30 -------- 1 -------- aweber_7solar_confirm
2009-07-31 -------- 1 -------- aweber_7solar_confirm
2009-08-01 -------- 2 -------- aweber_7solar_confirm
2009-08-02 -------- 1 -------- aweber_7solar_confirm
2009-08-03 -------- 2 -------- aweber_7solar_confirm
2009-08-04 -------- 1 -------- aweber_7solar_confirm
2009-07-29 -------- 1 -------- aweber_7solar_aw
2009-07-30 -------- 1 -------- aweber_7solar_aw
2009-07-31 -------- 1 -------- aweber_7solar_aw
2009-08-01 -------- 2 -------- aweber_7solar_aw
2009-08-02 -------- 1 -------- aweber_7solar_aw
2009-08-03 -------- 2 -------- aweber_7solar_aw
2009-08-04 -------- 1 -------- aweber_7solar_aw
Now the first (date) and last (table) column are as expected. But
what happened to count(*)??
There ARE 5 unique dates represented in the first table, as the
highest returned value for count(*) shows, but as you can see, there
are 8 unique dates in the second table, and 7 unique dates in the last
table. Why then do we see only "1"s and "2"s in those columns for
the latter 2 tables? And why does NOT the first table's rows include
exclusively ONLY the values "1", "2", "3", "4", "5"? I see two "2"s
and no "4". (??)
I'm sure I can hack PHP in that while loop to generate the right count
of unique dates for each table.. but I want to take advantage of this
thread up to now and learn more SQL. The docs say count() "Return[s]
a count of the number of rows returned". In relation to that
definition, I don't know what I am looking at in the results I got
above.
Can you 'splain me?
------------
John Butler (Govinda)
govinda.webdnatalk@xxxxxxxxx
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