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chore: updating docs
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@@ -1,7 +1,7 @@
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# Macro Core
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# Macro Core
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[![npm package][npm-image]][npm-url]
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[![npm package][npm-image]][npm-url]
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[![Github Workflow][githubworkflow-image]][githubworkflow-url]
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[![Github Workflow][githubworkflow-image]][githubworkflow-url]
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[]()
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[](/LICENSE)
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[](/LICENSE)
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@@ -37,6 +37,7 @@
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<h4> Related Macros </h4>
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<h4> Related Macros </h4>
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@li mp_getpk.test.sas
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@li mp_getpk.test.sas
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@li mp_guesspk.sas
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@version 9.3
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@version 9.3
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@author Macro People Ltd
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@author Macro People Ltd
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@@ -1,32 +1,37 @@
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/**
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/**
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@file mp_guesspk.sas
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@file
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@brief Guess the primary key of a table
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@brief Guess the primary key of a table
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@details Tries to guess the primary key of a table based on the following logic:
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@details Tries to guess the primary key of a table based on the following
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logic:
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* Columns with nulls are ignored
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* Columns with nulls are ignored
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* Return only column combinations that provide unique results
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* Return only column combinations that provide unique results
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* Start from one column, then move out to include composite keys of 2 to 6 columns
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* Start from one column, then move out to composite keys of 2 to 6 columns
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The library of the target should be assigned before using this macro.
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The library of the target should be assigned before using this macro.
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Usage:
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Usage:
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filename mc url "https://raw.githubusercontent.com/sasjs/core/main/all.sas";
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filename mc url
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"https://raw.githubusercontent.com/sasjs/core/main/all.sas";
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%inc mc;
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%inc mc;
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%mp_guesspk(sashelp.class,outds=classpks)
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%mp_guesspk(sashelp.class,outds=classpks)
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@param baseds The dataset to analyse
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@param baseds The dataset to analyse
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@param outds= The output dataset to contain the possible PKs
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@param outds= The output dataset to contain the possible PKs
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@param max_guesses= The total number of possible primary keys to generate. A
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@param max_guesses= (3) The total number of possible primary keys to generate.
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table is likely to have multiple unlikely PKs, so no need to list them all. Default=3.
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A table may have multiple unlikely PKs, so no need to list them all.
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@param min_rows= The minimum number of rows a table should have in order to try
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@param min_rows= (5) The minimum number of rows a table should have in order
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and guess the PK. Default=5.
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to try and guess the PK.
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<h4> SAS Macros </h4>
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<h4> SAS Macros </h4>
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@li mf_getvarlist.sas
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@li mf_getvarlist.sas
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@li mf_getuniquename.sas
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@li mf_getuniquename.sas
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@li mf_nobs.sas
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@li mf_nobs.sas
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<h4> Related Macros </h4>
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@li mp_getpk.sas
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@version 9.3
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@version 9.3
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@author Allan Bowe
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@author Allan Bowe
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@@ -196,7 +201,8 @@
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%let lev4=%scan(&posspks,&l);
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%let lev4=%scan(&posspks,&l);
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%if &lev1 ne &lev4 and &lev2 ne &lev4 and &lev3 ne &lev4 %then %do;
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%if &lev1 ne &lev4 and &lev2 ne &lev4 and &lev3 ne &lev4 %then %do;
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/* check for four level uniqueness */
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/* check for four level uniqueness */
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proc sort data=&pkds(keep=&lev1 &lev2 &lev3 &lev4) out=&tmpds noduprec;
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proc sort data=&pkds(keep=&lev1 &lev2 &lev3 &lev4)
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out=&tmpds noduprec;
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by _all_;
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by _all_;
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run;
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run;
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%if %mf_nobs(&tmpds)=&rows %then %do;
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%if %mf_nobs(&tmpds)=&rows %then %do;
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@@ -233,7 +239,8 @@
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%let lev5=%scan(&posspks,&m);
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%let lev5=%scan(&posspks,&m);
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%if &lev1 ne &lev5 & &lev2 ne &lev5 & &lev3 ne &lev5 & &lev4 ne &lev5 %then %do;
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%if &lev1 ne &lev5 & &lev2 ne &lev5 & &lev3 ne &lev5 & &lev4 ne &lev5 %then %do;
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/* check for four level uniqueness */
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/* check for four level uniqueness */
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proc sort data=&pkds(keep=&lev1 &lev2 &lev3 &lev4 &lev5) out=&tmpds noduprec;
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proc sort data=&pkds(keep=&lev1 &lev2 &lev3 &lev4 &lev5)
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out=&tmpds noduprec;
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by _all_;
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by _all_;
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run;
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run;
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%if %mf_nobs(&tmpds)=&rows %then %do;
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%if %mf_nobs(&tmpds)=&rows %then %do;
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@@ -282,7 +289,8 @@
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run;
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run;
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%if %mf_nobs(&tmpds)=&rows %then %do;
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%if %mf_nobs(&tmpds)=&rows %then %do;
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proc sql;
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proc sql;
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insert into &outds values("&lev1 &lev2 &lev3 &lev4 &lev5 &lev6");
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insert into &outds
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values("&lev1 &lev2 &lev3 &lev4 &lev5 &lev6");
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%if %mf_nobs(&outds) ge &max_guesses %then %do;
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%if %mf_nobs(&outds) ge &max_guesses %then %do;
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%put &sysmacroname: Max PKs reached at Level 6 for &baseds;
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%put &sysmacroname: Max PKs reached at Level 6 for &baseds;
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%return;
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%return;
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