how to select a table in sql code example

Example 1: delete column from table oracle PL SQL

ALTER TABLE table_name DROP COLUMN column_name;

Example 2: sql select syntax

select [all/distinct] <COL1>, <COL2>, <COL3>
from <TABLE_NAME>
[join <JOIN_CONDITION>]
[where <CONDITION>]
[group by <COLUMN_NAME>]
[having <SEARCH_CONDITION>]
[order by <SORT_SPECIFICATION>]


/*
Specifically for SQL -> Oracle

LEGEND: 
[...]   :   optional entries
<...>   :   your specific entry
*/

Example 3: how select from db

SELECT columname FROM tablename

Example 4: get number of table colums in sql query

select count(*) from tablename