Question

I have three tables…

First table Parameter_value_archive having columns as:

• Para_id,
• para_value,
• created_date,
• meter_id.

Sec table meter_primary_master having columns as:

• meter_name,
• meter_id.

third table parameter_master having columns as:

• para_name,
• para_id.

I want to collect data from these three tables and put it in a new table name Meter_specs having columns as:

• created_date,
• meter_id,
• meter_name,
• para_name,
• para_id,
• para_value.

How do do this ??

Answer 1

To create a new table having the same table definition of a select clause, use CREATE TABLE ... AS SELECT ... like this:

CREATE TABLE Meter_specs
AS
SELECT 
  ar.created_date,
  m.meter_id,
  m.meter_name,
  p.para_name,
  p.para_id
FROM Parameter_value_archive ar
INNER JOIN meter_primary_master m ON ar.meter_id = m.meter_id
INNER JOIN parameter_master     p ON p.para_id = ar.para_id = p.para_id;

This will make a new table Meter_specs with the columns:

• created_date,
• meter_id,
• meter_name,
• para_name,
• para_id.

SQL Fiddle Demo