How can I save the value of float variable NumFiscalActual into the char(15) column

Question

Editorial Team

Asked: May 23, 20262026-05-23T15:43:15+00:00 2026-05-23T15:43:15+00:00

How can I save the value of float variable NumFiscalActual into the char(15) column impfisfac

On sql server…

UPDATE FACTURA SET
impfisfac= cast(@NumFiscalActual AS varchar)

I know I’ve to use char variable='char value', but with this cast function… I dunno =/

Thx in advance

You must login to add an answer.

Need An Account,

Editorial Team · Answer 1 · 2026-05-23T15:43:15+00:00

Warning: float is upto 15 significant figures. For very small and very large number, varchar(15) will lose data.

You could try this

UPDATE FACTURA SET impfisfac= cast(@NumFiscalActual AS varchar(15)) WHERE...

(You need the WHERE clause otherwise every row will get the value)

However, there are issues converting floats: you may find that decimal places are lost (I can’t remember exact rules).

So, you can use STR, for example

UPDATE FACTURA SET impfisfac= RTRIM(LTRIM(STR(@NumFiscalActual,38,16))) WHERE...

But you’ll lose data as above. So why? Or use decimal fixed point types….

The Archive Base Latest Questions