Within a message flow project, you can create ESQL files to contain the ESQL code that you provide to modify or customize the behavior of Compute, Database, or Filter nodes.
The ESQL code is contained within a module that is associated with the node. Each module must be created within an ESQL file. The name of the module within the ESQL file must match the name specified for the module in the ESQL Module property of the corresponding node. Although you can modify the module name, and change it from its default value (which is the name of the message flow, concatenated with the name of the node with which the module is associated), ensure that the module in the ESQL file matches the node property.
The following topics describe how you can manage these files: