How to use getValuebyKey()

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question

Borja Lorenzo asked Sep 26 2024 at 12:04 PM Logan Gold commented Oct 01 2024 at 10:00 PM

How to use getValuebyKey()

Hello,

I need help understanding the use of getValuebyKey(). In this custom code, I iterate through each of the rows to extract the content of the second column and then process that string. This table is imported from a database, so it comes with a default ID column. If the ID starts at 1 and increases progressively, the function works for me. But this table can depend on certain SQL filters that change that ID.

As I have it set up, Table("BD_CPLAB").getValueByKey(row, 4) or Table("BD_CPLAB").getValueByKey(row, 2), as seen in the following capture. Row is an int that takes its value from the total number of rows in the BD_CPLAB table, to iterate through all the rows.

In the Systems Console, I get several errors referring to the same thing because I have this function in other Custom Code of my PF. The curious thing is that it points to row 36, where there is no error as I have checked.

To solve it, I changed the expression to Table("BD_CPLAB")[row] or Table("BD_CPLAB")[row]. What I intended with the getValuebyKey() function is that with the first argument of the function, it would go to the row index (1, 2, or x) and point to the column I indicate…

but what I have found is that it looks for a value equal to row in one of the rows?

I have two questions:

Can I use the getValuebyKey() function with this approach? How could I call the row index where the if condition is met?

Why is it pointing to an incorrect row in the System Console?

Software Version:

FlexSim 24.1.1

table getvaluebykey id row search row and column

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Answer 1 · 2024-09-26T13:09:20Z

Felix Möhlmann answered Sep 26 2024 at 1:09 PM Felix Möhlmann commented Sep 26 2024 at 1:52 PM

"getValueByKey(key, valueCol, keyCol)" is used to look for the first row where the value in the column keyCol is equal to key and return the value of column valueCol from that row.

https://docs.flexsim.com/en/24.2/Reference/CodingInFlexSim/FlexScriptAPIReference/Data/Table.html#Method-getValueByKey

If you know the row number, just use Table()[row][col].

The error message telling you the code line where the error happened is a new feature and doesn't always work, yet.

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Borja Lorenzo commented · Sep 26 2024 at 1:26 PM

I think I don’t quite understand it completely. Do you have any example of the application of this function in any tutorial, example, etc.? In my case, I detect the row through the if condition

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Felix Möhlmann Borja Lorenzo commented · Sep 26 2024 at 1:52 PM

Take this section of a made up bill of material. It contains size and weight of some SKUs.

If you wanted to get, for example, the weight of "GTZ_A3X" you would use

Table().getValueByKey("GTZ_A3X", 5, 1)

to get the value from the from the fifth column in a row where the first column is eqaul to "GTZ_A3X".

You use it when the row number is not known. In your code you iterate through the entire table, meaning you know which row you are looking at. So you should use "Table()[row][col]" to read values from that given row.

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