Tables

The explanation of arrays applies to tables except for the following differences:

Activity

Differences

Defining

A table name must be a unique symbolic name that begins with the letters TAB.

Loading

Tables can be loaded only at compilation time and prerun-time.

Using and Modifying table elements

Only one element of a table is active at one time. The table name is used to refer to the active element. An index cannot be specified for a table.

Searching

The LOOKUP operation is specified differently for tables. Different built-in functions are used for searching tables.

The following can be used to search a table:

• The LOOKUP operation code
• The %TLOOKUP built-in function
• The %TLOOKUPLT built-in function
• The %TLOOKUPLE built-in function
• The %TLOOKUPGT built-in function
• The %TLOOKUPGE built-in function

For more information about the LOOKUP operation code, see:

• LOOKUP with One Table
• LOOKUP with Two Tables
• LOOKUP (Look Up a Table or Array Element)

For more information about the %TLOOKUPxx built-in functions, see %TLOOKUPxx (Look Up a Table Element).