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SQLinDS, source files updated

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SQLinDS, source files updated
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yabwon
2020-10-14 16:33:07 +02:00
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packages/SQLinDS/001_macro/sql.sas
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@@ -1,41 +1,47 @@
/*** HELP START ***/
/*
## >>> `%SQL()` macro: <<< <a name="dssql-macro"></a> ###########################
/* >>> %SQL() macro: <<<
*
* Main macro which allows to use
* SQL's queries in the data step.
* Recommended for SAS 9.3 and higher.
* Based on paper:
* "Use the Full Power of SAS in Your Function-Style Macros"
* by Mike Rhoads, Westat, Rockville, MD
* https://support.sas.com/resources/papers/proceedings12/004-2012.pdf
*
* SYNTAX:
The **main** macro which allows to use
SQL queries in the data step.
Recommended for *SAS 9.3* and higher.
Based on the article *"Use the Full Power of SAS in Your Function-Style Macros"*
by *Mike Rhoads* (Westat, Rockville), available at:
[https://support.sas.com/resources/papers/proceedings12/004-2012.pdf](https://support.sas.com/resources/papers/proceedings12/004-2012.pdf)
%sql(<nonempty sql querry code>)
### SYNTAX: ###################################################################
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
%sql(<nonempty sql querry code>)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* The sql querry code is limited to 32000 bytes.
*
* EXAMPLE 1: simple sql query
The sql query code is limited to *32000* bytes.
data class_subset;
set %SQL(select name, sex, height from sashelp.class where age > 12);
run;
### EXAMPLES: #################################################################
* EXAMPLE 2: query with dataset options
**EXAMPLE 1**: simple SQL query
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
data class_subset;
set %SQL(select name, sex, height from sashelp.class where age > 12);
run;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
data renamed;
set %SQL(select * from sashelp.class where sex = "F")(rename = (age=age2));
run;
* EXAMPLE 3: dictionaries in datastep
data dictionary;
set %SQL(select * from dictionary.macros);
run;
**/
**EXAMPLE 2**: query with dataset options
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
data renamed;
set %SQL(select * from sashelp.class where sex = "F")(rename = (age=age2));
run;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
**EXAMPLE 3**: dictionaries in the data step
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
data dictionary;
set %SQL(select * from dictionary.macros);
run;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
---
*/
/*** HELP END ***/