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Version 1.9 Build 1556

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tablecreatescalarcoldesc - Function

	Package	utility
	Module	table

create descriptor of a scalar column

Synopsis
tablecreatescalarcoldesc(columname, value, datamanagertype, datamanagergroup, options, maxlen, comment, tableserver)

Description
A descriptor for a scalar column can be created from a name for the column, and a data value, which is used only to determine the type of the column. Note that a record value is also possible.

It is possible to create the column descriptor in more detail by giving the data manager name, group, option and comment as well.

The data manager type tells which data manager (storage manager) is used to store the columns. The data manager type and group are explained in more detail in the Tables module description. The option allowed is:

Undefined

If not given, all possible values of the scalar have a meaning. If given, a value equal to the undefined values in ValType.h is a truely undefined value.

The column descriptor is used in creating a table descriptor.

Arguments

columname	in	Name of column
		Allowed:	String
value	in	Example data value
		Allowed:	Any type
datamanagertype	in	Type of data manager
		Allowed:	String: StandardStMan|IncrementalStMan|TiledColumnStMan|TiledCellStMan|StManAipsIO
		Default:	''
datamanagergroup	in	Group of data manager
		Allowed:	String
		Default:	''
options	in	Options
		Allowed:	Int
		Default:	0
maxlen	in	Maximum string length
		Allowed:	Int
		Default:	0
comment	in	Comment: informational for user
		Allowed:	String
		Default:	''
tableserver	in	Table server to be used
		Allowed:	Any tableserver
		Default:	defaulttableserver

Returns
Column descriptor record

Example

scd1:=tablecreatescalarcoldesc("col2","aa"));
scd2:=tablecreatescalarcoldesc("col1",1,"IncrementalStMan");
td:=tablecreatedesc(scd1, scd1);

This creates a table description consisting of an integer column col1, and a string column col2. col1 uses the IncrementalStMan storage manager, while col2 uses the default storage manager StandardStMan.

See Also
tablecreatedesc tablecreatearraycoldesc