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## A.8 Match Windows

This section documents the windows used to crossmatch rows either between two or more local tables or within a single table. This topic is discussed in more detail in Section 5. Windows for other kinds of joins are described elsewhere: concatenation in Appendix A.10.2 and matching with remote tables via VO services in Appendix A.9 and against VizieR and SIMBAD via the CDS X-Match service in Appendix A.10.1.

The next subsection describes the features which are common to the different types of match window, and the following subsections detail the operation of each distinct match window (internal, pair and multi-table).

- A.8.1 Common Features

- A.8.1.1 Match Criteria
- A.8.1.2 Column Selection Boxes
- A.8.1.3 Tuning

- A.8.2 Pair Match Window

- A.8.2.1 Output Rows Selector Box

- A.8.3 Internal Match Window

- A.8.3.1 Internal Match Action Box

- A.8.4 Multiple Match Window

- A.8.4.1 Multiple Match Action Box

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@jiscmail.ac.uk