How to get one data table from Stored procedure that has multiple select statements using sql server

Question

I have two select statements in my stored procedure:

 alter proc multiple

 select * from table-one
 select * from table-two

Now how to get the data of table-one only by executing the stored procedure?

Answer 1

You can pass input variable and use if statment. For example:

ALTER PROCEDURE multiple
@choice INT
AS
BEGIN
   IF (@choice = 1)
   BEGIN
      SELECT * FROM Table1
   END
   IF (@choice = 2)
   BEGIN
      SELECT * FROM Table2
   END
   IF (@choice = 3)
   BEGIN
      SELECT * FROM Table1
      SELECT * FROM Table2
   END
END

And execution of procedure:

EXECUTE multiple @choice = 1 -- to use 1st select

EXECUTE multiple @choice = 2 -- to use 2st select

EXECUTE multiple @choice = 3 -- to use both selects

Answer 2

You can use TEMP table to fill all result in the temp table.

if you have 3 table name tab_1,tab_2,tab_3 then create a temp table with column maximum from these table(tab_1,tab_2,tab_3) and add a extra column to temp table to identify data from tables.

tab_1(id bigint,name varchar(50))

tab_2(id bigint,email varchar(50))

tab_3(id bigint,address varchar(50),phone varchar(50))

then your temp table should be like this

#tmp(col1 bigint(),col2 varchar(50),col3 varchar(50),from_table varchar(50))

eg

create table tab_1
(
  id bigint identity(1,1),
  name varchar(50),
  email varchar(50)
  )

  insert into tab_1(name,email) values
  ('a','a@mail.com'),  ('b','c@mail.com'),
    ('a1','a1@mail.com'),  ('a2','a2@mail.com'),
      ('a3','a3@mail.com'),  ('a4','a4@mail.com'),
      ('b1','b1@mail.com'),('b2','b2@mail.com')


     create table tab_2
(
  id bigint identity(1,1),
  name varchar(50),
  email varchar(50),
  amount decimal(18,2)

  ) 
    insert into tab_2(name,email,amount) values
  ('a','a@mail.com',12.5),  ('b','c@mail.com',11.6),
    ('a1','a1@mail.com',11.7),  ('a2','a2@mail.com',88.9),
      ('a3','a3@mail.com',90),  ('a4','a4@mail.com',45),
      ('b1','b1@mail.com',78),('b2','b2@mail.com',88)

and the Sp should be like

create table #tab(col1 bigint,
col2 varchar(50),
col3 varchar(50),col4 varchar(50),table_from varchar(50))

insert into #tab(col1,col2,col3,table_from) 
select id,name,email,'table_1' from tab_1

insert into #tab(col1,col2,col3,col4,table_from) 
select id,name,email,amount,'table_2' from tab_2

select * from #tab

FIDDLE DEMO