Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

Service Management2017.11

Develop > Tailoring > Links > Link maintenance > Skipping query writing

Skipping query writing

Service Management performs the “Fill” action based on the query defined in the link line to filter data against the target table. Prior to Service Management 9.41, you usually defined the query by ID.

As of Service Management 9.41, a Skip Query Rewriting option is available on the Edit Link Line form. This option is added as part of the logical name solution, which adds the display.name field to the device table to store CI names.

Note For more information about the logical name solution, see the Service Manager Logical Name Solution white paper.

Because CI names are now stored in the display.name field instead of the logical.name field, Service Management by default automatically rewrites your existing link queries at runtime to address the impact of the logical name solution (the Skip Query Rewriting option is disabled by default). If the Skip Query Rewriting option is enabled, the system does not perform the additional operations that it does when the option is not enabled.

To access this option, open a link record in Database Manager, highlight a link line and then select the Select Line option from the More menu. By default, this option is disabled.

Guidelines on editing link queries for a reference field

When writing a link query for a reference field, you need to observe different guidelines depending on whether this option is enabled or disabled.

Note The following descriptions use affected.item as an example reference field.

If the Skip Query Rewriting option is not enabled, update an expression such as “logical.name#affected.item in $File” to the following:

logical.name#\""+affected.item in $File+"\""
If the Skip Query Rewriting option is enabled, you must write a query like the following:

if (not (null(get.display.value($File, "affected.item")))) then $query+=(" and display.name#\""+get.display.value($File, "affected.item")+"\"")

Additionally, as a system administrator, you need to understand how the Fill function works for a reference field:

The “affected.item in $File” expression will be null when the user types something in the format, and the system gets what the user has typed by the “get.display.value” function.
If the Skip Query Rewriting option is not enabled, the system assigns what the user has typed to “affected.item in $File” when the user clicks the Fill button, and then rewrites at runtime the evaluated “$query” from, for example, “logical.name# DISPLAY VALUE” to “display.name# DISPLAY VALUE”. This makes the original link query still work for the reference field.

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