09-06-2011
Is there a way to do it inside SQL
I know that AWK can modify the data. However, do you know if there is a way to get it from the original SQL query?
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LEARN ABOUT MOJAVE
sql::abstract::tree5.18
SQL::Abstract::Tree(3) User Contributed Perl Documentation SQL::Abstract::Tree(3)
NAME
SQL::Abstract::Tree - Represent SQL as an AST
SYNOPSIS
my $sqla_tree = SQL::Abstract::Tree->new({ profile => 'console' });
print $sqla_tree->format('SELECT * FROM foo WHERE foo.a > 2');
# SELECT *
# FROM foo
# WHERE foo.a > 2
METHODS
new
my $sqla_tree = SQL::Abstract::Tree->new({ profile => 'console' });
$args = {
profile => 'console', # predefined profile to use (default: 'none')
fill_in_placeholders => 1, # true for placeholder population
placeholder_surround => # The strings that will be wrapped around
[GREEN, RESET], # populated placeholders if the above is set
indent_string => ' ', # the string used when indenting
indent_amount => 2, # how many of above string to use for a single
# indent level
newline => "
", # string for newline
colormap => {
select => [RED, RESET], # a pair of strings defining what to surround
# the keyword with for colorization
# ...
},
indentmap => {
select => 0, # A zero means that the keyword will start on
# a new line
from => 1, # Any other positive integer means that after
on => 2, # said newline it will get that many indents
# ...
},
}
Returns a new SQL::Abstract::Tree object. All arguments are optional.
profiles
There are four predefined profiles, "none", "console", "console_monochrome", and "html". Typically a user will probably just use "console"
or "console_monochrome", but if something about a profile bothers you, merely use the profile and override the parts that you don't like.
format
$sqlat->format('SELECT * FROM bar WHERE x = ?', [1])
Takes $sql and "@bindargs".
Returns a formatting string based on the string passed in
parse
$sqlat->parse('SELECT * FROM bar WHERE x = ?')
Returns a "tree" representing passed in SQL. Please do not depend on the structure of the returned tree. It may be stable at some point,
but not yet.
unparse
$sqlat->unparse($tree_structure, @bindargs)
Transform "tree" into SQL, applying various transforms on the way.
format_keyword
$sqlat->format_keyword('SELECT')
Currently this just takes a keyword and puts the "colormap" stuff around it. Later on it may do more and allow for coderef based
transforms.
pad_keyword
my ($before, $after) = @{$sqlat->pad_keyword('SELECT')};
Returns whitespace to be inserted around a keyword.
fill_in_placeholder
my $value = $sqlat->fill_in_placeholder(@bindargs)
Removes last arg from passed arrayref and returns it, surrounded with the values in placeholder_surround, and then surrounded with single
quotes.
indent
Returns as many indent strings as indent amounts times the first argument.
ACCESSORS
colormap
See "new"
fill_in_placeholders
See "new"
indent_amount
See "new"
indent_string
See "new"
indentmap
See "new"
newline
See "new"
placeholder_surround
See "new"
perl v5.18.2 2014-01-16 SQL::Abstract::Tree(3)