ABAP Keyword Documentation → ABAP Glossary
column selector
The ~ character. A column col of a
database table dbtab or
view view
can be addressed in a SELECT statement
using dbtab~col or view~col. This type of addressing
is necessary when multiple database tables are accessed and the name of a column occurs in a number
of different database tables or if two columns are compared with one another by a comparison in the WHERE condition.