如何将表数据导出到txt（或）csv文件？ 仅最后查询结果集导出到文件中？

Question

I am new Bash shell script and exporting the table datas into txt file.

db2 "export to $filename of del messages msg.txt select * from students_table" 

file Contains "FirstName","23","Pass"

Again i am using the same file name

$filename

 db2 "export to $filename of del messages msg.txt select * from employees_table"

Now the output is "EmployeeName","25,000","Salaried" Only last query result set got printed.

Expected Output is

1. "FirstName","23","Pass"
2. "EmployeeName","25,000","Salaried"

help me to resolve this. thanks in advance.

Answer 1

EXPORT command overwrites the file if it exists:

TO filename

...

If the name of a file that exists is specified, the export utility overwrites the contents of the file; it does not append the information.