This command enables you to enquire and return the number of columns in the specified logical table.

The format of the command is as follows:

An example of the command is given below:

LTAB_COLUMNS requires a parameter, which is the name of the logical table to enquire. In this example, the logical table is logtable1

As the LTAB_COLUMNS command returns a value, this value has to be assigned to a variable, as shown in the following example. A typical use of the LTAB_COLUMNS command is:

which means the LTAB_COLUMNS command returns the number of columns in the logical table logtable1 and then LET assigns it to the macro variable num_columns.

The returned value is a number.