Temporary tables in sql server

Question

I am working on creation of temporary tables in sql server. I created the temporary table successfully but when I try to view the data it says INVALID OBJECT NAME. Can anyone pls tell foe how long temporary tables exists? If I am logged on to sql server as userid - devloper and pwd = 0999 and someother person is also logged on to the sql server with same credentials, this temporary tables will get deleted? my sql is as follows:

SELECT net_node_model.SYS_ID, net_node_model.NODE, mst_temp_equation.TEMP_ID,
       mst_temp_equation.EQ_ID
INTO ##NT_MASTER_TEMP_EQUATION
FROM mst_temp_equation INNER JOIN
     net_node_model ON mst_temp_equation.TEMP_ID = net_node_model.TEMP_ID
GROUP BY net_node_model.SYS_ID, net_node_model.NODE, mst_temp_equation.TEMP_ID,
         mst_temp_equation.EQ_ID, mst_temp_equation.EQ_NAME,
         mst_temp_equation.EQ_TYPE, mst_temp_equation.[OBJECT],
         mst_temp_equation.VAR_TYPE, mst_temp_equation.VAR_NAME,
         mst_temp_equation.VAR_SUBSET, mst_temp_equation.VAR_SET,
         mst_temp_equation.RHS_RELN, mst_temp_equation.RHS_OBJECT,
         mst_temp_equation.RHS_VAR_SET, mst_temp_equation.RHS_VAR_SUBSET,
         mst_temp_equation.RHS_VAR_TYPE, mst_temp_equation.RHS_VAR_NAME,
         mst_temp_equation.EQ_TP_OFFSET, mst_temp_equation.RHS_TP_OFFSET,
         mst_temp_equation.RETAIN, mst_temp_equation.TIME_PRD,
         mst_temp_equation.EQ_VAR_SUBTYPE, mst_temp_equation.RHS_VAR_SUBTYE;

Answer 1

If you are using a regular temporary table #table, it will not be visible to any other session apart from the one it was created on. Once that session is finished, the table will be removed.

If you are using a global temporary table ##table, it will be visible to other sessions.

From MSDN - CREATE TABLE, under temporary tables:

Global temporary tables are automatically dropped when the session that created the table ends and all other tasks have stopped referencing them.