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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
SQL statementsThis chapter describes the syntax and semantics of SQL statements that are recognized by HCL OneDB™.
GET DIAGNOSTICS statementUse the GET DIAGNOSTICS statement to return diagnostic information about the most recently executed SQL statement.
The Contents of the SERVER_NAME Field

The Contents of the SERVER_NAME Field

The SERVER_NAME field contains different information after you execute the following statements.

Executed Statement: SERVER_NAME Field Contents
CONNECT: Contains the name of the database server to which you connect or fail to connect. Field is blank if you do not have a current connection or if you make a default connection.
DATABASE: Contains the name of the database server on which the specified database resides.
DISCONNECT: Contains the name of the database server from which you disconnect or fail to disconnect. If you disconnect and then you execute a DISCONNECT statement for a connection that is not current, the SERVER_NAME field remains unchanged.
DISCONNECT ALL: Sets the field to blank if the statement executes successfully. If the statement fails, SERVER_NAME contains the names of all the database servers from which you did not disconnect. (This information does not mean that the connection still exists.)
SET CONNECTION: Contains the name of the database server to which you switch or fail to switch

If CONNECT succeeds, SERVER_NAME is set to one of the following values:

The ONEDB_SERVER value (if the connection is to a default database server, because CONNECT specified no database server)
The name of the database server (if the connection is to a specific database server)

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