Returns a fixed character string to the requestor.
ECHO is a Teradata extension to the ANSI SQL:2011 standard.
ECHO Not Supported for Embedded SQL
The Teradata preprocessor does not support ECHO.
ECHO Not Supported for SQL Procedures
SQL procedures do not support ECHO.
How ECHO Works
When the system encounters an ECHO request, it sends an ECHO parcel containing string to the client system, where it is then interpreted.
ECHO and BTEQ
ECHO is used most frequently in macros to perform BTEQ commands during macro execution.
If command is not a BTEQ format command, BTEQ logs the illegal command as an error.