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

2 votes282 views1 answer
Postgresql create schema in specific database
SQL
1 vote269 views1 answer
Oracle sql average
SQL
2 votes323 views1 answer
Capitalize 1st letter in sql server
SQL
0 vote305 views1 answer
Mysql grant all on all databases
SQL
0 vote283 views1 answer
Get who is hired in month in sql
SQL
7 votes283 views1 answer
Mysql iif
SQL
0 vote290 views1 answer
Set column in all row mysql
SQL
0 vote283 views1 answer
FILENAME /usr/bin/mysql does not exists. Make sure correct path is set in /etc/dump admin/settings.conf.
SQL
0 vote342 views1 answer
Python get backup of sql
SQL
3 votes278 views1 answer
Oracle show trigger code
SQL