在不加入sql的情况下获取所有记录

Question

i have two tables table1 and table2, table1 in 10 filed available and tbale2 in 6 filed available.but no any relation between them.

i want to get all record from both table.

Answer 1

Use cross join

Select t.*,t1.* from table t cross join table1 t1

If you want all the records in the same table use the above query it will join and give m*n rows where m and n are number of rows in the tables

You can use union all if you want all the results added m+n number of results

Select * from table
Union all
Select * from table1

You need to specify the columns if you need specific columns from both tables. Or if you have different number of columns in the tables

Answer 2

If you have at least some common columns, you can union them together. For example:

Table1

Name Description Quantity Price

Table2

Name Description OrderDate Blah BlahBlah

You can do something like this:

SELECT Name, Description FROM Table1 
UNION ALL 
SELECT Name, Description FROM Table2

That would give you a result set with 2 columns (Name, Description, OrderDate) that is made up of rows from both Table1 and Table2