Select by text pattern window

This window is shown from the Selection Assistant menu.
 
This tool allows free-form marking based on text patterns from any column in the table
Select by text pattern window
1

Column Name

1. Column Name
The column name to use.
2

Pattern

2. Pattern
The text to search for. When the text is found the row is marked (checked). The pattern may be found in any part of the text, unless the 'Match Whole Column' option is on.
 
3

Match whole column check

3. Match whole column check
Requires a match of the whole pattern.
4

Use Regular Expressions check

4. Use Regular Expressions check
Advanced users may use regular expression patterns.
5

Mark button

5. Mark button
Mark all rows which contain the pattern.
6

Unmark button

6. Unmark button
Unmark all rows which contain the pattern.