if suppose i have 3 columns namely 1,2,3 in table a and
1,2,3 in table b Now in table a 1,2 and table b 1,2 columns
are having same data.now based on this two columns either
data should get inserted or updated. How do i write a sql
query to check whether the data is populated correctly or
not

Answer Posted / sri

Write Tablename.columnname in SQL query. In your case,

for selecting all data from table a column 2,the query is:

select * from a.2

So in this way operation of data can be made by using
required SQL operators.

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