CREATE OR REPLACE PROCEDURE ZAD_CZWARTE AS
row_num number;
sql_stmnt varchar2(200);
cursor kursor is
select table_name from user_tables;
tab_name varchar2(200);
BEGIN
FOR c_kur IN kursor LOOP
tab_name := c_kur.table_name;
--dbms_output.put_line(tab_name);
sql_stmnt :='SELECT COUNT(*) FROM :1';
execute immediate sql_stmnt into row_num using tab_name;
DBMS_OUTPUT.PUT_LINE(tab_name||' : '||row_num);
END LOOP;
END zad_czwarte;
Theres a problem with execute immediate line. Anybody knows whats the problem? everything seems just fine for me. The task is to output table names of the user with number of rows in them.
You can't bind physical table as bind variable. Your command must be sql_stmnt :='SELECT COUNT(*) FROM ' || tab_name; and then execute immediate sql_stmnt into row_num;
Related
I want Stored Procedure which create Temporary table using Create Table ... Select ... Statement.
And then select the records from same created table.
And finally drop that created table...
I want all these functionality in same stored procedure.
I have create the following stored procedure. But i got the below error
PL/SQL: ORA-00942: table or view does not exist
This one is my Procedure
DECLARE
TEMP_TBL VARCHAR2(4000);
TBL_NAME VARCHAR2(200) := 'ABC_TEST';
BEGIN
TEMP_TBL := 'CREATE TABLE MY_TAB_COL AS(SELECT TABLE_NAME,COLUMN_NAME,DATA_TYPE,to_lob(DATA_DEFAULT) AS DATA_DEFAULT,NULLABLE FROM ALL_TAB_COLS WHERE TABLE_NAME=''' || TBL_NAME || ''')';
DBMS_OUTPUT.PUT_LINE(TEMP_TBL);
EXECUTE IMMEDIATE TEMP_TBL;
FOR DD_COLUMNS IN
(SELECT TABLE_NAME FROM MY_TAB_COL)
LOOP
DBMS_OUTPUT.PUT_LINE('DD_COLUMNS.TABLE_NAME');
END LOOP;
END;
I'm not sure why you want scenario like that, and not reccomend to use this code in production. I'm pretty sure in the 99% of the cases, this approach can be written in other way. But you can try the code bellow(Everything in your procedure should use dynamic sql)
declare
TBL_NAME varchar2(200) := 'ABC_TEST';
lv_Sql varchar2(4000);
begin
lv_Sql := 'CREATE TABLE MY_TAB_COL AS(SELECT TABLE_NAME,COLUMN_NAME,DATA_TYPE,to_lob(DATA_DEFAULT) AS DATA_DEFAULT,NULLABLE FROM ALL_TAB_COLS WHERE TABLE_NAME=''' ||
TBL_NAME || ''')';
DBMS_OUTPUT.PUT_LINE(lv_Sql);
execute immediate lv_Sql;
lv_Sql := 'begin
for DD_COLUMNS in (select TABLE_NAME from MY_TAB_COL) loop
DBMS_OUTPUT.PUT_LINE(DD_COLUMNS.TABLE_NAME);
end loop;
end;';
DBMS_OUTPUT.PUT_LINE(lv_Sql);
execute immediate lv_Sql;
for R in (select *
from user_objects
where object_name = 'MY_TAB_COL'
and object_type = 'TABLE') loop
DBMS_OUTPUT.PUT_LINE('drop table ' || R.Object_Name);
execute immediate 'drop table ' || R.Object_Name;
end loop;
end;
I am trying to assign table name to a variable and to use the same inside execute immediate statement , please help me with the syntax inside execute statement
scenario is
I am trying to pass a table name as parameter in the procedure and am using them inside execute immediate to write into some other table .
please suggest me the syntax for in parameters and for the execute immediate statement.
My Procedure:
CREATE OR REPLACE PROCEDURE tep
AS
v_sql VARCHAR2(1024) ;
a NUMBER;
b VARCHAR2(30) :='t_stg1_non_silicon_purchace_re';
BEGIN
v_sql := q'[SELECT COUNT(*) FROM b ]';
EXECUTE immediate v_sql INTO a;
DBMS_OUTPUT.PUT_LINE( TO_CHAR(v_sql));
DBMS_OUTPUT.PUT_LINE( TO_CHAR(a));
END;
/
You haven't specified what exactly you want to do with the table name in the execute immediate so see example below of how to "CREATE" a table.
DECLARE
vTableName VARCHAR2(40 CHAR);
vSQL VARCHAR2(1000 CHAR);
BEGIN
vTableName:='MY_TABLE_NAME';
vSQL:='CREATE TABLE ' || vTableName || ' (COL1 NUMBER, COL2 NUMBER)';
EXECUTE IMMEDIATE vSQL;
END;
/
This query may satisfy your requirement. Thanks
CREATE OR REPLACE PROCEDURE tep
AS
v_sql VARCHAR2(1024) ;
a NUMBER;
b VARCHAR2(30) :='t_stg1_non_silicon_purchace_re';
BEGIN
v_sql := 'SELECT COUNT(*) FROM'||' '||b;
EXECUTE immediate v_sql INTO a;
DBMS_OUTPUT.PUT_LINE( TO_CHAR(v_sql));
DBMS_OUTPUT.PUT_LINE( TO_CHAR(a));
END;
CREATE OR REPLACE PROCEDURE ResetVersionNumberValue IS
sql_stmt VARCHAR2(2000);
BEGIN
FOR sql_stmt IN (select 'update '|| table_name ||
' set version = 0'
from user_tables
where table_name like 'MY_%')
LOOP
EXECUTE IMMEDIATE sql_stmt;
END LOOP;
COMMIT;
END;
Why the about procedure is not compiling? Its giving error saying
Error(8,26): PLS-00382: expression is of wrong type
How to resolve this?
Two things:
You need to remember that when iterating a cursor it returns a ROW, not a VALUE, and
The SELECT in the cursor needs to give a name to the value in the row being generated by the cursor.
Try:
CREATE OR REPLACE PROCEDURE ResetVersionNumberValue IS
BEGIN
FOR aRow IN (select 'update '|| table_name ||
' set version = 0' AS SQL_STMT
from user_tables
where table_name like 'MY_%')
LOOP
EXECUTE IMMEDIATE aRow.SQL_STMT;
END LOOP;
COMMIT;
END;
Share and enjoy.
CREATE OR REPLACE PROCEDURE ResetVersionNumberValue IS
BEGIN
FOR sql_stmt IN (
select 'update '|| table_name || ' set version = 0' as x
from user_tables
where table_name like 'MY_%')
LOOP
EXECUTE IMMEDIATE sql_stmt.x;
END LOOP;
COMMIT;
END;
I need a help on this.
I am trying to create a pl/sql anonymous block and when I run that it shows its completed but it don't run the code. It should give me an error saying name is already used by an existing object. Can someone help me on this.
I am actually creating procedures but just trying this code as a sample.
DECLARE
V_REF_TBL VARCHAR2(100);
V_SQL LONG;
begin
V_REF_TBL :='My_TABLE';
v_SQL :='truncate table '||V_REF_TBL ;
EXECUTE IMMEDIATE V_SQL;
EXECUTE IMMEDIATE 'CREATE TABLE '|| V_REF_TBL ||' parallel 9 nologging pctfree 0 as
select * from dual';
End;
Possibly you're looking for this:
<<my_block>>
Declare
table_name varchar2(30);
counter number;
Begin
table_name := 'my_table';
select count(*)
into counter
from user_tables
where table_name = Upper(Trim(my_block.table_name)) and
dropped = 'NO';
if counter = 0
then
execute immediate 'create table '||table_name||' as ... etc';
else
execute immediate 'truncate table '||table_name;
execute immediate 'insert into '||table_name' select ... etc';
end if;
end my_block;
We have a sql script to update a set of sequences after seed data populated our tables. The code below would not work:
declare
cursor c1 is
select
'select nvl(max(id),0) from '||uc.table_name sql_text,
uc.table_name||'_SEQ' sequence_name
from
user_constraints uc,
user_cons_columns ucc
where uc.constraint_type='P'
and ucc.constraint_name = uc.constraint_name
and ucc.column_name='ID'
and uc.owner='ME';
alter_sequence_text varchar2(1024);
TYPE generic_cursor_type IS REF CURSOR;
max_id number;
c2 generic_cursor_type;
begin
for r1 in c1 loop
open c2 for r1.sql_text;
fetch c2 into max_id;
close c2;
if( max_id != 0 ) then
dbms_output.put_line( 'seq name = '||r1.sequence_name );
execute immediate 'alter sequence '||r1.sequence_name||' increment by '||to_char(max_id);
dbms_output.put_line( 'max_id = '||to_char(max_id) );
execute immediate 'select '||r1.sequence_name||'.nextval from dual';
dbms_output.put_line( 'sequence value = '||to_char(next_id) );
execute immediate 'alter sequence '||r1.sequence_name||' increment by 1';
dbms_output.put_line( 'sequence: '||r1.sequence_name||' is at '||to_char(max_id+1) );
end if;
end loop;
end;
After searching I found a reference that stated I needed to change the line:
execute immediate 'select '||r1.sequence_name||'.nextval from dual'
and add 'into next_id;' (of course declaring next_id appropriately) so the result would be:
execute immediate 'select '||r1.sequence_name||'.nextval from dual into next_id;
I've only dealt lightly with pl/sql and sql in general and am interested to know why this change was necessary to make the script work correctly.
Thanks.
When you are using select inside PL/SQL block you have to place data returned by that select statement somewhere. So you have to declare a variable of appropriate data type and use select into clause to put data select returns into that variable even if select statement is executed by execute immediate statement.
Examples
declare
x number;
begin
select count(*)
into x
from all_objects;
end;
declare
x number;
begin
execute immediate 'select count(*)from all_objects' into x;
end;
So your execute immediate statement would be
execute immediate 'select '||sequence_name||'.nextval from dual' into newseqval;
If you are using Oracle 11g onward you can assign sequence's value directly to a variable, there is no need of using select into clause.
declare
x number;
begin
x := Sequence_Name.nextval;
end;
select seq_name.nextval from dual implies the implicit cursor creation and the results of the cursor should be fetched somewhere so you need fetch it into any externally declared bind variable.