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Jan 8, 2020 12:30 AM
(374 views)

I've got errors on below code:

```
dt << New Column( "Stage",
If( Formula( Substr( :Column 9, 1, 2 ) ) == "CP",
Formula( Left( :Column 9, 3 ) ),
" "
)
);
```

I want to add a new Col named "Stage" besides a raw Column 9, if starts with CP get the 1st 3 letters else blank, but I've got errors

Unexpected end of input. Perhaps there is a missing "," or ")".

Trying to parse arguments of function "New Column".

Line 207 Column 3: ►

I suspect I use Formula in wrong way, might need help here

Column 9 | Stage |

NG | |

CP2-NAVI12 | CP2 |

CP1-NAVI12 | CP1 |

NG | |

CP2-NAVI12 | CP2 |

jerryspilTC

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The issue with your code is that you are not understanding the Formula element from the New Column function. You seem to be approaching the problem thinking that each segment within your line of script that has a function, such as Substr() or Left() needs to be told that it is a formula. Actually, the entire line of jsl:

`If( Substr( :Column 9, 1, 2 ) == "CP", Left( :Column 9, 3 ), "" )`

is what needs to be declared as the formula for the new column. Thus the New Column() function needs to be specified as:

```
dt << New Column( "Stage",
Character,
"Nominal",
Formula( If( Substr( :Column 9, 1, 2 ) == "CP", Left( :Column 9, 3 ), "" ) )
);
```

Jim

2 REPLIES 2

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The issue with your code is that you are not understanding the Formula element from the New Column function. You seem to be approaching the problem thinking that each segment within your line of script that has a function, such as Substr() or Left() needs to be told that it is a formula. Actually, the entire line of jsl:

`If( Substr( :Column 9, 1, 2 ) == "CP", Left( :Column 9, 3 ), "" )`

is what needs to be declared as the formula for the new column. Thus the New Column() function needs to be specified as:

```
dt << New Column( "Stage",
Character,
"Nominal",
Formula( If( Substr( :Column 9, 1, 2 ) == "CP", Left( :Column 9, 3 ), "" ) )
);
```

Jim

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Re: What's wrong with below code

Thanks Jim, Got it

jerryspilTC