Select distinct sas

SELECT DISTINCT e la funzione COUNT. DISTINCT Statement The DISTINCT statement calculates the count of unique raw values of variables. You can specify the variables to calculate in the variable list. If no list is specifie the count of unique raw values is calculated for all variables. SAS distinct in proc sql vs proc sort.

Trying Select Distinct in Proc Sql. Can someone explain to me what this code is doing? I am fairly new to SAS and still have trouble with some things.

I have a dataset and want to get the distinct count of members based on two variables. Variable (SDA) has values and Variable (FFYEAR) HAS values. This is a simple question : I want to create a table selecting distinct observations from an existing table based on combination of three columns but I want to retain some more variables from the original table.

You can check the PROC SQL macro variable SQLOBS to see the number of rows that are produced by a query-expression. See Using the PROC SQL Automatic Macro Variables in the SAS 9. Solved: how to get a count of distinct values from a variable without using proc sql ? Selects columns and rows of data from tables and views. A row is considered a duplicate when all of its values are the same as the values of another row. One row is displayed for each existing combination of values. I want to use select distinct in a proc sql statement for a specific column.

In the sql select distinct query, no record is really dropped as variable c not part of the select. In the proc sort nodupkey example SAS only keeps the first observation it encounters. The way a when-expression is used depends on whether a select -expression is present.

Explanation: If the select -expression is present, SAS evaluates the select -expression and when-expression. SAS compares the two for equality and returns a value of true or false. If the comparison is true, statement is executed.

The second method of removing duplicates uses PROC SQL. PROC SQL provides SAS users with an alternative to using PROC SORT, a particularly effective alternative for RDBMS users and SQL -centric organizations. Two approaches to removing duplicates will be illustrate both using the.

Instead of hard-coding the possible values, you can write SAS macro code to create them and if the category values change or new categories are adde the SAS code is automatically updated with the new values. Tom , Im not sure what you are trying to end up with. Your code and what I gather from your write up is basically after distinct values of soome variables but non distinct values of others.

Is there an elegant way in SAS to calculate a count distinct at multiple levels without using a series of sql statements? Suppose we are counting unique customers. Joe has bought large widgets and small widget, and it is simple enough to count him as customer for large widgets and customer for small widgets. SAS count of distinct variables - Data Step. SAS : merging a proc sql and data step.

DISTINCT will eliminate those rows where all the selected fields are identical. PROC SQL can perform many of the operations provided by the DATA step, and the PRINT, SORT, MEANS and SUMMARY procedures. Syntax for the SAS SQL Procedure The SQL Procedure includes several statements, not all of which are always required.