PL\SQL - Get counts of all tables in a schema - errors - sql

Question

I want to get a result: table name, count amount for each table from AS_TABLE_LIST.
create procedure AtRowCount
as
declare
TableCount NUMBER(1);
TableName VARCHAR2(100);
BEGIN
SelectQuery1:= 'SELECT count(*) FROM ' || TableName || ' INTO ' || TableCount;
FOR TableName IN (select table_name from AS_TABLE_LIST)
LOOP
EXECUTE IMMEDIATE SelectQuery1;
END LOOP;
select TableName, TableCount into AT_ROW_COUNT from dual;
END AtRowCount;
I get two errors:
[Error] PLS-00306 (7: 19): PLS-00306: wrong number or types of
arguments in call to '||'
[Error] ORA-00904 (9: 8): PL/SQL: ORA-00904: "TABLENAME": invalid
identifier
I've been trying many times to fix this but still got same errors.
any advice?

Answer 1

I'm not exactly sure what you're trying todo, but it might be the following:
CREATE PROCEDURE AtRowCount AS
DECLARE
l_count NUMBER;
BEGIN
FOR c IN (SELECT table_name from AS_TABLE_LIST) LOOP
EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM '||c.table_name INTO l_count;
INSERT INTO AT_ROW_COUNT(TableName, TableCount )
VALUES (c.table_name, l_count);
END LOOP;
END AtRowCount;
If you want you're procedure to return the list instead of inserting the result in a new table, you have to use a pipelined function instead (see https://oracle-base.com/articles/misc/pipelined-table-functions for an example on how to use it).

Answer 2

You can get all rows count against table name in oracle by:
select owner, table_name, nvl(num_rows,-1)
from all_tables
order by nvl(num_rows,-1) desc
https://livesql.oracle.com/apex/livesql/file/content_EPJLBHYMPOPAGL9PQAV7XH14Q.html

Answer 3

Hope this will work for you
CREATE PROCEDURE atrowcount
IS
selectquery1 VARCHAR2(2000);
tablecount NUMBER;
BEGIN
selectquery1:= 'SELECT count(1) FROM :TableName';
FOR i IN (select table_name from AS_TABLE_LIST)
LOOP
EXECUTE IMMEDIATE selectquery1 INTO tablecount USING i.table_name;
INSERT INTO table_list VALUES(i.table_name,TableCount);
END LOOP;
COMMIT;
END AtRowCount;