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Merge pull request #36 from ChrisRiddiough/main
Add nested formats
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‎By Syntax/FORMAT Procedure/Using Nested Formats.sas‎

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/************************************************************************************************
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USING NESTED FORMATS
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This program creates a format based on other formats for different ranges of data.
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Keywords: PROC FORMAT, FORMAT, VALUE
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SAS Versions: SAS 9, SAS Viya
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Documentation: https://documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=default&docsetId=proc&docsetTarget=p1xidhqypi0fnwn1if8opjpqpbmn.htm
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1. Create a data set on which to test the new format.
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2. Use PROC FORMAT with a value statement. This identifies the name of the new format. Provide ranges for which you
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want to assign different formats.
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3. To nest formats use square brackets to identify the format to be applied to each range.
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4. In the PROC PRINT apply the format to see the results.
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************************************************************************************************/
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data payroll; /*1*/
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infile cards;
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input EmployeeID EmployeeGender : $1. Salary BirthDate : date9. HireDate : date9.;
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cards;
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120101 M 163040 18AUG1980 01JUL2007
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120102 M 108255 11AUG1973 01JUN1993
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120103 M 87975 22JAN1953 01JAN1978
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120104 F 46230 11MAY1958 01JAN1985
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120105 F 27110 21DEC1978 01MAY2003
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120106 M 26960 23DEC1948 01JAN1978
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120107 F 30475 21JAN1953 01FEB1978
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120108 F 27660 23FEB1988 01AUG2010
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120109 F 26495 15DEC1990 01OCT2010
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120110 M 28615 20NOV1953 01NOV1983
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;
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run;
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proc format; /*2*/
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value benefit low-'31dec60'd=[weekdate50.] /*3*/
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'01jan61'd-'31dec93'd=[worddate20.]
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'01jan94'd-high='** Not Eligible **'
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;
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run;
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title "Display Dates using a Nested Custom Format";
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proc print data=payroll;/*4*/
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format Birthdate Hiredate benefit.;
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run;

‎By Syntax/FORMAT Procedure/Using the By Groupformat Statement to Process Data.sas‎

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/************************************************************************************************
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USING THE BY GROUPFORMAT STATEMENT TO PROCESS DATA
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This program creates a format that can be used to group data. It shows the use of the groupformat option in the data step.
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Keywords: PROC FORMAT, FORMAT, VALUE, GROUPFORMAT
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SAS Versions: SAS 9, SAS Viya
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Documentation: https://documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=default&docsetId=proc&docsetTarget=p1xidhqypi0fnwn1if8opjpqpbmn.htm
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1. Create a data set on which to test the new format. The data is sorted by the value to be formatted.
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2. Use PROC FORMAT with a value statement. Provide ranges for which you want to assign different grouping levels.
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3. Use the groupformat option on the by statement to allow the data step to read the data by groups.
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4. Because the data is being read with a by statement the first. and last. variables are created. In this example, the
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first.salary will be the lowest salary observation for a group and the last.salary observation will be the highest.
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5. In the PROC REPORT apply the format to see the results.
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************************************************************************************************/
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data payroll; /*1*/
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infile cards;
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input EmployeeID Salary BirthDate : date9. HireDate : date9.;
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cards;
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120185 25080 07APR1978 01DEC2010
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121101 25390 28AUG1990 01NOV2010
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121092 25680 08MAR1978 01AUG2006
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121106 25880 02FEB1973 01FEB2000
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121072 26105 10JAN1983 01SEP2008
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120178 26165 23NOV1958 01APR1978
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121027 26165 05MAY1968 01DEC1993
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121096 26335 18MAY1973 01MAY1999
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120112 26550 17FEB1973 01JUL1994
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121002 26650 18SEP1958 01DEC1983
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120687 26800 25MAY1983 01AUG2008
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120183 26910 10SEP1973 01DEC2010
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120999 27215 28DEC1963 01APR1988
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120153 27260 07MAY1983 01JAN2002
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121059 27425 25OCT1963 01APR1985
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120164 27450 26NOV1963 01FEB1986
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120120 27645 05MAY1948 01JAN1978
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121139 27700 19AUG1963 01JUL1991
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121075 28395 23DEC1948 01JAN1978
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120715 28535 12JUN1983 01FEB2009
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121042 28845 04APR1983 01NOV2003
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120799 29070 23MAR1983 01NOV2002
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121105 29545 09MAY1983 01JAN2007
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121061 29815 16JUL1958 01JUL1988
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121062 30305 28OCT1988 01AUG2010
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121019 31320 25JUN1990 01JUN2008
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121032 31335 24FEB1992 01MAR2010
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121080 32235 24JAN1963 01SEP1991
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121099 32725 19MAR1983 01MAY2004
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120787 34000 22AUG1973 01JAN2000
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120731 34150 15MAR1963 01SEP1987
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120754 34760 02JUN1992 01MAY2010
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120683 36315 12NOV1958 01JAN1978
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120757 38545 18MAR1948 01JAN1978
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120789 39330 14JUL1968 01DEC1986
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120774 45155 17SEP1982 01MAR2006
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120796 47030 12MAY1958 01MAR1987
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120793 47155 08AUG1973 01JUN2000
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120668 47785 23OCT1953 01DEC1982
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120813 50865 14SEP1973 01JAN1997
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120804 55400 11FEB1948 01JAN1978
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120712 63640 12JUN1953 01JAN1978
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121145 84260 22NOV1953 01APR1980
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120260 207885 02DEC1968 01NOV1988
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120259 433800 25JAN1968 01SEP1993
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;
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run;
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proc format; /*2*/
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value salgrp low-<30000='Under $30,000'
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30000-<35000='$30,000 to $35,000'
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35000-<50000='$35,000 to $50,000'
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50000-high='Over $50,000';
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run;
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data highlowsal;
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set payroll;
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by groupformat salary; /*3*/
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format salary salgrp.;
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if first.salary then output; /*4*/
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if last.salary then output;
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run;
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proc report data=highlowsal nowd; /*5*/
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columns EmployeeID Salary Salary=SalGrp HireDate;
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define salary / display format=dollar12.;
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define hiredate / format=date9.;
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define salgrp / format=salgrp. 'Salary Group';
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title 'Lowest and Highest Salary by Salary Group';
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run;
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title;

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