Github user fmcquillan99 commented on the issue:
https://github.com/apache/madlib/pull/291
In cols2vec,
For this table:
```
CREATE TABLE golf (
id integer NOT NULL,
"OUTLOOK" text,
temperature double precision,
humidity double precision,
"Temp_Humidity" double precision[],
clouds_airquality text[],
windy boolean,
class text,
observation_weight double precision
);
```
this fails:
```
SELECT madlib.cols2vec(
'golf',
'cols2vec_result',
'id, temperature'
);
```
because `id` is INT and `temperature` is FLOAT.
It forces the user to do:
```
SELECT madlib.cols2vec(
'golf',
'cols2vec_result',
'id::FLOAT, temperature'
);
```
but this is inconvenient especially if you have a big
table and are using '*' to get all columns into the feature
vector and they are a mix of numeric types.
Also a mix of VARCHAR and TEXT fails in a similar way
but should not.
Use PostgreSQL precendence rules to fix this please.
---
