mORMot Open Source

array81

Member

From: Italy

Registered: 2010-07-23

Posts: 411

Change field type

In the past I have create a table with a column defined as TEXT column.
However I have saved numbers and not text inside this field, so now I'd like change column definition to FLOAT.
I have try to use external editor but I get always the same error: "no such collation sequence:_SYSTEMNOCASE".

I need change it in alternative when I use SUM inside my query I get problem with negative numbers.

Is there a way to do this?

ab

Administrator

From: France

Registered: 2010-06-21

Posts: 14,231

Website

Re: Change field type

You could change the default collation, but only at table creation, AFAIK.
See http://synopse.info/files/html/Synopse% … #TITLE_136

Some possibilities:

1. Add a new FLOAT column, and put the FLOAT values in this new field.
2. Change the table layout (i.e. a new class type definition), and move all data to the new class.

In both cases, create a small update function, using a FillPrepare() to read, and a Batch to write.