I am very enthusiastic about alasql and it was already a great help to me. Thanks a lot for the great work.
But...

Datatype switches from string to number after FROM CSV import.

CSV sample:
"117.20";"some name"
"88.33";"other name"

SQL:
CREATE TABLE test (id string,name string);
SELECT * INTO test FROM CSV('some csv file');
SELECT * FROM test;

results in:

The column 'ID' datatype changed to number and the value is handled as float and trailing Null is cut off.
Bad if this is an identifier.

PS: it seems to work with FROM XLSX, when column is formated as TEXT in Excel