sql notes
Reference
SQL vs DATA step
subset
columns
select col1, col2
from
rows
select *
from **
where (condition)
use calculated variable
where calculated newvar > 14;
based on summary stats
SELECT * FROM ex.admits
WHERE (bp_sys GE
(SELECT MEAN(bp_sys)+ 2*STD(bp_sys))
FROM ex.admits))
OR (bp_sys LE
(SELECT (MEAN(bp_sys) - 2*STD(bp_sys))
FROM ex.admits));
subquery
Join
Inner
rows matched in both tables
from dat1 as a, dat2 as b
where a.id = b.id
or
from dat1 a INNER JOIN dat2 b
on id1 = id2
Three table
from a, b, c
where (id1 = id2) AND (hosp = hosp_id)
Left
keep the rows not matched in left
Summary
COUNT = N
MIN
MAX
operator
where primdx LIKE '410%'
IN
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1.0', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
// Callback that creates and populates a data table,
// instantiates the pie chart, passes in the data and
// draws it.
function drawChart() {
// Create the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Topping');
data.addColumn('number', 'Slices');
data.addRows([
['Mushrooms', 3],
['Onions', 1],
['Olives', 1],
['Zucchini', 1],
['Pepperoni', 2]
]);
// Set chart options
var options = {'title':'How Much Pizza I Ate Last Night',
'width':400,
'height':300};
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
Published
02 May 2014
Modified
liuminzhao 01/24/2015 22:21:25