Check the structure of tables like describe ,sp_columns,\d

Check the structure of tables like describe ,sp_columns,\d

Select *
from<table_name>
where
group by
having
order by

Example:

Check the full table and all columns as output:

Select * from employees;

Specify the column name in select Query:

Select employeename,employeeid from employees;

SQL Server 

# exec sp_columns TableName

 Oracle 

# Desc tablename;

 PostgreSQL 

# \d+ tablename

# \d tablename

MYSQL

# Describe tablename;     

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