There are different ways to select all User defined tables from databases
Option 1: Using Object Catalog view
1: SELECT sobjects.name
2: FROM sysobjects sobjects
3: WHERE sobjects.xtype = 'U'
4: order by sobjects.name
Alternatively here is a list of other object types you can search for as well:
C: Check constraint
D: Default constraint
F: Foreign Key constraint
L: Log
P: Stored procedure
PK: Primary Key constraint
RF: Replication Filter stored procedure
S: System table
TR: Trigger
U: User table
UQ: Unique constraint
V: View
X: Extended stored procedure
Option 2: Using Information schema view
1: SELECT * FROM INFORMATION_SCHEMA.TABLES
2: WHERE TABLE_TYPE = 'BASE TABLE'
Here is something you can do as well
1: select * from sys.tables
Suppose you might need to get all tables from your SQL SERVER Instance. Here is what you can do
1: --for all databases
2: sp_msforeachdb 'select "?" AS db, * from [?].sys.tables'