Type the expression that will have an underscript. Type x. Create an underscript by pressing the Control key and the 4 key at the same time.

SQLCatalogNames[conn] returns the names of the catalogs in an SQL connection.

SQLResultSetClose[rs] closes a result set.

SQLSavepoint[...] is an object that represents a savepoint in an SQL transaction.

SQLSchemaNames[conn] returns the names of the schema in an SQL connection.

$SQLUseConnectionPool gives the default setting that specifies whether a connection pool is used to retrieve a connection.

AllowRaggedArrays[True] lets you pass ragged (i.e., non rectangular) arrays to Java. AllowRaggedArrays[False] restores the default behavior.

BeginJavaBlock[] begins an evaluation block equivalent to a JavaBlock, except that it works across a larger span than the evaluation of a single expression.

EndJavaBlock[] ends an evaluation block equivalent to a JavaBlock, except that it works across a larger span than the evaluation of a single expression.

JavaClass[classname, n] represents a Java class with the specified name.