Get columns number sql

Get number of columns sql

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 votes167 views1 answer
Oracle drop sequence if exists
SQL
16 votes172 views2 answers
Add column to all tables after first column mysql
SQL
0 vote158 views1 answer
Postgres get running query
SQL
0 vote196 views1 answer
"inspanel" intitle:"login" -"cannot" "Login ID" -site:luckyfish.io
SQL
0 vote176 views1 answer
Can sqldatareader be null
SQL
0 vote194 views1 answer
Mysql update column default value CURRENT_TIMESTAMP error
SQL
0 vote179 views1 answer
Django mssql backend
SQL
0 vote203 views2 answers
Mysql update two tables at once
SQL
1 vote168 views1 answer
Type int in mysql maxlenght
SQL
7 votes174 views1 answer
Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column. To disable safe mode, toggle the option in Preferences -> SQL Editor and reconnect.
SQL