The exist() method in the WHERE clause is used to filter the rows from the table. The value() method is used to retrieve ProductModelID attribute values from the XML. The following example shows using both the value() method and the exist() method of the xml data type. Using the value() and exist() methods to retrieve values from an xml type column Per static typing requirements, is added at the end of the path expression in the value() method to explicitly indicate that the path expression returns a singleton.Ĭ. The namespace keyword is used to define a namespace prefix. Note the following from the previous query: The query retrieves ProductModelID attribute values from each XML instance stored in the column. The following query is specified against an xml type column ( CatalogDescription) in the AdventureWorks database. Using the value() method to retrieve a value from an xml type column For more information about static typing, see XQuery and Static Typing.
Therefore, the additional is specified at the end of the path expression. DECLARE XMLģ year parts and labor extended maintenance is availableĪlthough there is only one ProductID attribute in the XML instance, the static typing rules require you to explicitly specify that the path expression returns a singleton. The value is then assigned to an int variable. The value() method retrieves the ProductID attribute value from the XML. In the following example, an XML instance is stored in a variable of xml type. Using the value() method against an xml type variable The variable will not exist once the installer has finished.For performance reasons, instead of using the value() method in a predicate to compare with a relational value, use exist() with sql:column(). If it does not exist yet, a new one will be created. Set the value of a system environment variable. Variable to which to save the current working directory. Path to add to the system search for dynamic libraries on Linuxĭelete an environment variable from the system.
INSTALLBUILDER EXTRACT VALUE FROM PATH WINDOWS
Whether or not to attempt to match Windows hidden filesĪdd a path in which the system will search for shared libraries on Linux This will modify the registry on Windows and the appropiate shell initialization files on Unix systems. Where to insert the new directory in the PATH (currently Unix only)Īdd a system environment variable. This will modify the registry on windows and the appropiate shell initialization files on Unix systems The only exception to this is when abortOnError equals zero or the action is inside a validationActionList, in which case it will prompt an error dialog to the user, but will not exit the installer.Īdd a directory to the system path. Generate an error inside the installer so the installer will exit. Shows a warning dialog with the given text. Note that regular text still needs to be provided in case the installer is run in another mode Variable name where the answer will be stored.ĭisplay a read-only text dialog to the user. Variable name where the result will be stored The result is stored as yes or no in the given variable name.
INSTALLBUILDER EXTRACT VALUE FROM PATH PASSWORD
Variable name where the password will be stored.ĭisplay an indeterminate progressmeter in a popup window to execute a list of actions. Predefined list of options that allows the user to select a value
Prompt a choice question dialog to the user. List of rules to satisfy in order to evaluate the current elementĪbortOnError, breakpoint, customErrorMessage, explanation, progressText, ruleEvaluationLogic, run, show, showMessageOnError, onErrorActionList, ruleList List of actions to execute if the action fails Whether or not to show an error message when an error occurs. Show or hide the checkbutton in the final page action list Whether or not to run the related action or not Text to show on the progress bar or final page action List
Whether or not to abort the installation on an error while executing the action.Īdditional text to show when the action is displayed on the final page action list.