7.00.02 - Input - Aster Analytics

Teradata Aster® Analytics Foundation User GuideUpdate 2

Product
Aster Analytics
Release Number
7.00.02
Release Date
September 2017
Content Type
Programming Reference
User Guide
Publication ID
B700-1022-700K
Language
English (United States)

The DWT2D function has a required input table (or view) and an optional wavelet filter table. If you omit the wavelet filter table, you must specify the Wavelet argument.

The input table can contain at most 1594 columns. The function assumes that each sequence can be fitted into the memory of the worker. The following table describes the input table columns that you can or must specify with arguments. The input table can have additional columns, but the function ignores them.

The table below shows the schema of the wavelet filter table.

DWT2D Input Table Schema
Column Name Data Type Description
partition_column INTEGER, SMALLINT, BIGINT, NUMERIC [(p, s)], TEXT, VARCHAR, VARCHAR(n), UUID, or BYTEA Optional. Sequence identifier of the sequence to which the data belongs. Rows with the same partition column values belong to the same sequence. If the input table has multiple partition columns, the function treats the first one as the distribute key of the output and meta tables.

If all the values are invalid in a sequence, the function ignores the sequence.

indexy INTEGER Y index of the sequence to which the data belongs. If this column contains a NULL value, the function ignores the row.
indexx INTEGER X index of the sequence to which the data belongs. If this column contains a NULL value, the function ignores the row.
input_column INTEGER, SMALLINT, BIGINT, BIGSERIAL, DOUBLE PRECISION, NUMERIC [(p, s)], or SERIAL Data to be transformed—numeric values between -1e308 and 1e308 (or NULL, which the function treats as 0).