Sql number columns

SELECT TABLE_NAME , count(COLUMN_NAME)
FROM information_schema.columns
GROUP BY TABLE_NAME;

-- Oracle (depending on schema grants):
SELECT count(*) FROM USER_TAB_COLS WHERE TABLE_NAME = 'my_table';
SELECT count(*) FROM ALL_TAB_COLS WHERE TABLE_NAME = 'my_table';
SELECT count(*) FROM DBA_TAB_COLS WHERE TABLE_NAME = 'my_table';

Get columns number sql

//With JAVA

String quer="SELECT * FROM sample2 where 1=2";

Statement st=con.createStatement();
ResultSet rs=st.executeQuery(quer);
ResultSetMetaData rsmd = rs.getMetaData();
int NumOfCol=0;
NumOfCol=rsmd.getColumnCount();
System.out.println("Query Executed!! No of Colm="+NumOfCol);

Source: stackoverflow.com

Similar codes

24 votes130 views6 answers
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
SQL
22 votes190 views4 answers
Mysql date format
SQL
4 votes194 views1 answer
Mysql store ip address
SQL
1 vote193 views2 answers
Sql server find all foreign keys that reference a column
SQL
0 vote131 views1 answer
How to export only procedures mysql
SQL
4 votes118 views4 answers
Rollback in sql
SQL
0 vote125 views1 answer
Postgresql create table many-to-many
SQL
2 votes139 views1 answer
ADD COLOUNS CREATED AND UPDATED AT IN MYSQL
SQL
1 vote158 views1 answer
Oracle check table lock
SQL
7 votes214 views1 answer
Oracle alter sequence restart start with
SQL