QlikView Reference Manual.pdf - QlikCommunity - QlikView

var is a script variable name which will acquire a new value from list for each loop execution. If var is specified
after next it must be the same variable name as the one found after the corresponding for each.
list := item { , item }
item := constant | (expression) | filelistmask | dirlistmask
constant is any number or string.
expression is an arbitrary expression.
mask is a filename or directory name mask which may include any valid filename characters as well as the
standard wildcard characters, * and ?.
condition is a logical expression evaluating to true or false.
statements is any group of one or more QlikView script statements.
The filelist mask syntax produces a comma separated list of all files in the current directory matching the filename
mask. The dirlist mask syntax produces a comma separated list of all directories in the current directory
matching the directory name mask.
The value of the var variable may be changed by statements inside the loop, but this is not good programming
practice.
If an exit for clause is encountered inside the loop, the execution of the script will be transferred to the first
statement after the next clause denoting the end of the loop. An exit for clause can be made conditional by
the optional use of a when or unless suffix.
Since the for each..next statement is a control statement and as such is ended with either a semicolon or endof-line,
each of its three possible clauses (for each, exit for and next) must not cross a line boundary.
Examples:
for each a in 1,3,7,'xyz'
load * from file$(a).csv;
next
// list all QV related files on disk
sub DoDir (Root)
for each Ext in 'qvw', 'qva', 'qvo', 'qvs'
for each File in filelist (Root&' \*.' &Ext)
Load '$(File)' as Name, FileSize( '$(File)' ) as
Size, FileTime( '$(File)' ) as FileTime
autogenerate 1;
next File
next Ext
for each Dir in dirlist (Root&' \*' )
call DoDir (Dir)
next Dir
end sub
call DoDir ('C:')
Back to Script Statements and Keywords (page 219).
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