Using JMP - SAS

94 Import Your Data Chapter 3
Import Data from a Database
Use the IN and BETWEEN Statements
To specify a range of values to fetch, use the IN and BETWEEN statements in conjunction with WHERE. IN
statements specify a list of values and BETWEEN lets you specify a range of values. For example,
SELECT * FROM "Solubil$" WHERE LABELS IN (‘Methanol’, ‘Ethanol’, ‘Propanol’)
fetches all rows that have values of the LABELS column Methanol, Ethanol, or Propanol.
SELECT * FROM "Solubil$" WHERE ETH BETWEEN 0 AND 2
fetches all rows that have ETH values between 0 and 2.
Use the LIKE Statement
With the LIKE statement, you can select values similar to a given string. Use % to represent a string of
characters that can take on any value. For example, you might want to select chemicals out of the "Solubil$"
data that are alcohols, that is, have the –ol ending. The following SQL statement accomplishes this task.
SELECT * FROM "Solubil$" WHERE LABELS LIKE ‘%OL’
The % operator can be placed anywhere in the LIKE statement. The following example extracts all rows that
have labels starting with M and ending in OL:
SELECT * FROM "Solubil$" WHERE LABELS LIKE ‘M%OL’
Use Aggregate Functions
Aggregate functions are used to fetch summaries of data rather than the data itself. Use any of the following
aggregate functions in a SELECT statement.
Table 3.3 SELECT Statement Functions
Function
SUM( )
AVG( )
MAX( )
MIN( )
COUNT( )
Meaning
Sum of the column
Average of the column
Maximum of the column
Minimum of the column
Number of rows in the column
Some examples include:
• The following statement requests the sum of the ETH and OCT columns:
SELECT SUM(ETH), SUM(OCT) FROM "Solubil$"
• This statement returns the number of rows that have ETH values greater than one:
SELECT COUNT(*) FROM "Solubil$" WHERE ETH > 1