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Get Table From Key

Description

This functor retrieves the sub-table corresponding to the given chain of keys from a given input table.

Inputs

Name Type Description
Table Table The input table.
Keys Tuple Chain of keys identifying the sub-table that will be retrieved.

Outputs

Name Type Description
Result Table The resulting sub-table.

Group

Table

Notes

This functors retrives all elementos corresponding to the given set of keys in the input table. For example, given the table below

Key1* Key2* Key3* Value1 Value2 Value3
1 “a” 11 12 “bbbb” 23
1 “b” 22 12 “cccc” 23
2 “a” 11 12 “bbbb” 14
2 “a” 22 12 “aaaa” 23
2 “d” 22 12 “dddd” 12

retrieving the sub-table corresponding to keys <2, “a”>

Key1* Key2* Key3* Value1 Value2 Value3
1 “a” 11 12 “bbbb” 23
1 “b” 22 12 “cccc” 23
2 “a” 11 12 “bbbb” 14
2 “a” 22 12 “aaaa” 23
2 “d” 22 12 “dddd”

yelds

Key3* Value1 Value2 Value3
11 12 “bbbb” 14
22 12 “aaaa” 23

and retriving the sub-table corresponding to key <2>:

Key1* Key2* Key3* Value1 Value2 Value3
1 “a” 11 12 “bbbb” 23
1 “b” 22 12 “cccc” 23
2 “a” 11 12 “bbbb” 14
2 “a” 22 12 “aaaa” 23
2 “d” 22 12 “dddd” 12

yelds

Key2* Key3* Value1 Value2 Value3
“a” 11 12 “bbbb” 14
“a” 22 12 “aaaa” 23
“d” 22 12 “dddd” 12

If the resulting sub-table does not have any column of keys or if the given keys are not present in the input table, an error is reported.

Internal Name

GetTableFromKey