Using JMP - SAS

190 Reshape Data Chapter 6
Join Data Tables
Table 6.7 Description of the Join Window (Continued)
Update first table with
data from second table
Merge same name
columns
Copy formula
Suppress formula
evaluation
When Update first table with data from second table is checked, column
data from the second table change the data of the same name columns in the
original table.
Note the following:
• JMP does not replace data with missing values.
• The output table uses the same columns as the original table. Thus,
when you use Update first table with data from second table, Select
Columns for joined table is not applicable.
• The Update first table with data from second table option is available
only when joining by row number or by matching columns.
Click the box beside Merge same name columns if you want the data from
the second table to replace the data of the same name columns in the
original table. Note that missing values in the first table are replaced by
nonmissing values in the second.
If you join by matching columns, the new table contains a column named
Match Flag:
• If a one (1) appears in this column, the data originated from the first
(active) table.
• If a two (2) appears in this column, the data originated from the second
table.
• If a three (3) appears in this column, the data was found in both the first
and second tables.
To include formulas from the original table in the output columns, click the
box beside Copy formula.
To prevent JMP from evaluating columns’ formulas during the creation of
the new table, click the box beside Suppress formula evaluation.