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SQLinDS [2.2.2] Package regenerated with the latest version of the SAS Packages Framework.
176 lines
6.1 KiB
Markdown
176 lines
6.1 KiB
Markdown
- [The SQLinDS package [ver. 2.2.2]](#sqlinds-package)
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- [Content description](#content-description)
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* [library `dsSQL`](#library-dssql)
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* [`%dsSQL_inner()` macro](#dssql-inner-macro)
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* [`%SQL()` macro](#dssql-inner-macro)
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* [`dsSQL()` function](#dssql-function)
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* [License](#license)
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---
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# The SQLinDS package [ver. 2.2.2] <a name="sqlinds-package"></a> ###############################################
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The **SQLinDS** package is an implementation of
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the *macro-function-sandwich* concept introduced in the
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*"Use the Full Power of SAS in Your Function-Style Macros"*,
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the article by *Mike Rhoads (Westat, Rockville)*.
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Copy of the article is available at:
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[https://support.sas.com/resources/papers/proceedings12/004-2012.pdf](https://support.sas.com/resources/papers/proceedings12/004-2012.pdf)
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Package provides ability to *execute* SQL queries inside a data step, e.g.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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data class;
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set %SQL(select * from sashelp.class);
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run;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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See the help for the `%SQL()` macro to find more examples.
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### Content ###################################################################
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SQLinDS package contains the following components:
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1. `%SQL()` macro - the main package macro available for the User
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2. `dsSQL()` function (internal)
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3. `%dsSQL_inner()` macro (internal)
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4. Library `DSSQL` (created as a subdirectory of the `WORK` library)
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---
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Package contains:
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1. libname dssql
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2. macro dssql_inner
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3. macro sql
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4. function dssql
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Required SAS Components:
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*Base SAS Software*
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*SAS package generated by generatePackage, version 20221121*
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The SHA256 hash digest for package SQLinDS:
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`085F0B8BD4A59343E2913FF9635EA6E551ADD54E9678C35F5096D4A0A895B9C5`
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---
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# Content description ############################################################################################
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## >>> library `dsSQL`: <<< <a name="library-dssql"></a> ########################
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The `dsSQL` library stores temporary views
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generated during the `%SQL()` macro execution.
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If possible a subdirectory of the `WORK` location is created, like:
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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LIBNAME dsSQL BASE "%sysfunc(pathname(WORK))/dsSQLtmp";
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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if not possible, then redirects to the `WORK` location, like:
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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LIBNAME dsSQL BASE "%sysfunc(pathname(WORK))";
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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---
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## >>> `%dsSQL_Inner()` macro: <<< <a name="dssql-inner-macro"></a> #############
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**Internal** macro called by `dsSQL()` function.
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The macro generates a uniquely named SQL view on the fly
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which is then stored in the `dsSQL` library.
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Recommended for *SAS 9.3* and higher.
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---
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## >>> `%SQL()` macro: <<< <a name="dssql-macro"></a> ###########################
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The **main** macro which allows to use
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SQL queries in the data step.
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Recommended for *SAS 9.3* and higher.
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Based on the article *"Use the Full Power of SAS in Your Function-Style Macros"*
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by *Mike Rhoads* (Westat, Rockville), available at:
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[https://support.sas.com/resources/papers/proceedings12/004-2012.pdf](https://support.sas.com/resources/papers/proceedings12/004-2012.pdf)
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### SYNTAX: ###################################################################
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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%sql(<nonempty sql querry code>)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The sql query code is limited to *32000* bytes.
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### EXAMPLES: #################################################################
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**EXAMPLE 1**: simple SQL query
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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data class_subset;
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set %SQL(select name, sex, height from sashelp.class where age > 12);
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run;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**EXAMPLE 2**: query with dataset options
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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data renamed;
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set %SQL(select * from sashelp.class where sex = "F")(rename = (age=age2));
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run;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**EXAMPLE 3**: dictionaries in the data step
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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data dictionary;
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set %SQL(select * from dictionary.macros);
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run;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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---
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## >>> `dsSQL()` function: <<< <a name="dssql-function"></a> ####################
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**Internal** function called by the `%SQL()` macro.
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The function pass a query code from the `%SQL()`
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macro to the `%dsSQL_Inner()` internal macro.
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Recommended for *SAS 9.3* and higher.
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### SYNTAX: ###################################################################
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas
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dsSQL(unique_index_2, query)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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**Arguments description**:
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1. `unique_index_2` - *Numeric*, internal variable, a unique index for views.
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2. `query` - *Character*, internal variable, contains query text.
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---
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## License ####################################################################
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Copyright (c) 2012 Mike Rhoads
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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---
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