Optional parameter to pass in specifications for the randomness of the values. This map is different from the *options*
parameter of most other endpoints in that it is a map of string to map of string to doubles, while most others are maps of
string to string. In this map, the top level keys represent which column's parameters are being specified, while the
internal keys represents which parameter is being specified. The parameters that can be specified are: *min*, *max*, and
*interval*. These parameters take on different meanings depending on the type of the column. Below follows a more detailed
description of the map:
- all: This key indicates that the specifications relayed in the internal map are to be applied to all columns of
the records.
- min: For numerical columns, the minimum of the generated values is set to this value. Default is -99999. For
point, shape, and track semantic types, min for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90],
respectively. The default minimum possible values for these columns in such cases are -180.0 and -90.0. For the 'TIMESTAMP'
column, the default minimum corresponds to Jan 1, 2010.
For string columns, the minimum length of the randomly generated strings is set to this value (default is 1). If both
minimum and maximum are provided, minimum must be less than or equal to max. Value needs to be within [1, 200].
If the min is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track types, then
those parameters will not be set; however, GPUdb will not throw an error in such a case. It is the responsibility of the user
to use the all parameter judiciously.
- max: For numerical columns, the maximum of the generated values is set to this value. Default is 99999. For
point, shape, and track semantic types, max for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90],
respectively. The default minimum possible values for these columns in such cases are 180.0 and 90.0.
For string columns, the maximum length of the randomly generated strings is set to this value (default is 200). If both
minimum and maximum are provided, *max* must be greater than or equal to *min*. Value needs to be within [1, 200].
If the *max* is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track types,
then those parameters will not be set; however, GPUdb will not throw an error in such a case. It is the responsibility of the
user to use the all parameter judiciously.
- interval: If specified, then generate values for all columns linearly and evenly spaced with the given interval
value starting at the minimum value (instead of generating random data). *Any provided max value is disregarded.* For
string-type columns, the interval value is ignored but the string values would be generated following the pattern:
'attrname_creationIndex#', i.e. the column name suffixed with an underscore and a running counter (starting at 0).
- attr_name: Set the following parameters for the column specified by the key. This overrides any parameter set by
all.
- min: For numerical columns, the minimum of the generated values is set to this value. Default is -99999. For
point, shape, and track semantic types, min for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90],
respectively. The default minimum possible values for these columns in such cases are -180.0 and -90.0. For the 'TIMESTAMP'
column, the default minimum corresponds to Jan 1, 2010.
For string columns, the minimum length of the randomly generated strings is set to this value (default is 1). If both
minimum and maximum are provided, minimum must be less than or equal to max. Value needs to be within [1, 200].
If the min is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track types, then
those parameters will not be set; however, GPUdb will not throw an error in such a case. It is the responsibility of the user
to use the all parameter judiciously.
- max: For numerical columns, the maximum of the generated values is set to this value. Default is 99999. For
point, shape, and track semantic types, max for numeric 'x' and 'y' columns needs to be within [-180, 180] and [-90, 90],
respectively. The default minimum possible values for these columns in such cases are 180.0 and 90.0.
For string columns, the maximum length of the randomly generated strings is set to this value (default is 200). If both
minimum and maximum are provided, *max* must be greater than or equal to *min*. Value needs to be within [1, 200].
If the *max* is outside the accepted ranges for strings columns and 'x' and 'y' columns for point/shape/track types,
then those parameters will not be set; however, GPUdb will not throw an error in such a case. It is the responsibility of the
user to use the all parameter judiciously.
- interval: If specified, then generate values for all columns linearly and evenly spaced with the given interval
value starting at the minimum value (instead of generating random data). *Any provided max value is disregarded.* For
string-type columns, the interval value is ignored but the string values would be generated following the pattern:
'attrname_creationIndex#', i.e. the column name suffixed with an underscore and a running counter (starting at 0).
- track_length: This key-map pair is only valid for track type data sets (GPUdb throws an error otherwise).
- min: Minimum possible length for generated series; default is 100 records per series. Must be an integral value
within the range [1, 500]. If both min and max are specified, min must be less than or equal to max.
- max: Maximum possible length for generated series; default is 500 records per series. Must be an integral value
within the range [1, 500]. If both min and max are specified, max must be greater than or equal to min.
A set of string constants for the parameter
options.