How can I count rows in PL SQL?

How can I count rows in PL SQL?

1. Statement 1. set serveroutput on. Unsupported Command.
2. Statement 2. declare cursor c is select * from all_tables; n number; begin n := 0; for row in c loop n := n + 1; end loop; dbms_output.put_line(‘Total rows = ‘ || n); end; Total rows = 292.

How do I get Rowcount in SQL?

To counts all of the rows in a table, whether they contain NULL values or not, use COUNT(*). That form of the COUNT() function basically returns the number of rows in a result set returned by a SELECT statement.

How do you loop through a table in PL SQL?

create or replace FUNCTION func_count_rows(table_name IN varchar2, debug boolean default false) RETURN number IS total number(2) := 0; BEGIN IF debug = true THEN DBMS_OUTPUT. put(‘Function count rows: ‘); DBMS_OUTPUT. PUT_LINE(‘select count(*) from ‘ || table_name || ‘;’); DBMS_OUTPUT. put(‘Returns: ‘); DBMS_OUTPUT.

Can you use \%Rowcount as a parameter to a cursor?

Usage Notes The cursor attributes apply to every cursor or cursor variable. For example, you can open multiple cursors, then use \%FOUND or \%NOTFOUND to tell which cursors have rows left to fetch. Likewise, you can use \%ROWCOUNT to tell how many rows have been fetched so far.

How do I get all rows in SQL Developer?

There’s no setting to fetch all records. You wouldn’t like SQL Developer to fetch for minutes on big tables anyway. If, for 1 specific table, you want to fetch all records, you can do Control-End in the results pane to go to the last record.

How do you count the results of a SQL query?

The COUNT() function returns the number of rows that matches a specified criteria.

1. SQL COUNT(column_name) Syntax. The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column:
2. SQL COUNT(*) Syntax.
3. SQL COUNT(DISTINCT column_name) Syntax.

How do I count tables in mysql?

To check the count of tables. mysql> SELECT count(*) AS TOTALNUMBEROFTABLES -> FROM INFORMATION_SCHEMA. TABLES -> WHERE TABLE_SCHEMA = ‘business’; The following output gives the count of all the tables.

How do I count rows in SQL without counting?

Count Rows of a table Without using Count() Function

1. SELECT so.[name] as.
2. , CASE WHEN si. indid between 1 and 254.
3. THEN si.[name] ELSE NULL END.
4. AS [Index Name]
5. , si. indid, rows.
6. FROM sys. sysindexes si.
7. INNER JOIN sysobjects so.
8. ON si. id = so. id.

How do you write a loop in PL SQL?

PL/SQL For Loop Example 2

1. DECLARE.
2. VAR1 NUMBER;
3. BEGIN.
4. VAR1:=10;
5. FOR VAR2 IN 1..10.
6. LOOP.
7. DBMS_OUTPUT.PUT_LINE (VAR1*VAR2);
8. END LOOP;

How do you create a loop in SQL query?

DECLARE @cnt INT = 0; WHILE @cnt < 10 BEGIN PRINT ‘Inside FOR LOOP’; SET @cnt = @cnt + 1; END; PRINT ‘Done FOR LOOP’; If you know, you need to complete first iteration of loop anyway, then you can try DO.. WHILE or REPEAT..

How do I get cursor count in SQL Server?

@@CURSOR_ROWS is the cursor system functions in SQL Server that is used to check the current cursor row count. This is useful when we are working with one or more cursors in the procedures.

How can I count the number of rows affected in SQL Server?

Transact-SQL statements can set the value in @@ROWCOUNT in the following ways:

1. Set @@ROWCOUNT to the number of rows affected or read. Rows may or may not be sent to the client.
2. Preserve @@ROWCOUNT from the previous statement execution.
3. Reset @@ROWCOUNT to 0 but do not return the value to the client.