This question already has answers here:
Is it possible to pass table name as a parameter in Oracle?
(3 answers)
Closed 4 years ago.
I am just started to study Oracle. When I Execute Following Statement
DECLARE
sql_stmt VARCHAR2(200);
table_obj user_tables.table_name%type;
begin
for l_i in (select table_name from results) loop
table_obj := dbms_assert.sql_object_name(l_i.table_name);
sql_stmt := 'update results set cnt_record = ( select count(*) from :1) where table_name = UPPER(:2)';
EXECUTE IMMEDIATE sql_stmt
USING table_obj, l_i.table_name;
end loop;
end;
I get an error:
Error report -
ORA-00903: invalid table name
ORA-06512: at line 11
00903. 00000 - "invalid table name"
*Cause:
*Action:
You are only allow to pass constant names into an expression. You are not allowed to pass table names, column names, operators, function names and so on.
So, you have to "munge" the query string before you execute it:
table_obj := dbms_assert.sql_object_name(l_i.table_name);
sql_stmt := 'update results set cnt_record = ( select count(*) from <tablename>) where table_name = UPPER(:1)';
sql_stmt := replace(sql_stmt, '<tablename>', table_obj);
EXECUTE IMMEDIATE sql_stmt
USING l_i.table_name;
end loop;
end;
You could replace both occurrences using replace(), but the argument in upper() is fine for a parameter.
Related
I am trying to build a package that will take in a table of table names and either drop from or delete those tables. I am using dynamic sql, and dropping or deleting the tables works, but I need both the procedures to loop through all of the table names passed back to it.
I've tried mulitple ways - including trying to create a FOR Loop and a cursor. Here is a similar function I wrote in PostgreSQL that works but I'm having trouble translating it to Oracle.
Here is my function in PostgreSQL that works:
CREATE OR REPLACE FUNCTION drop_tables_for_stnd_mod_build(tablenames text)
RETURNS void
LANGUAGE plpgsql
AS $function$
DECLARE
tab_name RECORD;
BEGIN
FOR tab_name IN EXECUTE 'SELECT table_name FROM ' || tablenames
LOOP
EXECUTE 'DROP TABLE ' || tab_name.table_name || ' CASCADE';
END LOOP;
END;
$function$
;
And the procedure I'm writing as part of a package in Oracle
CREATE OR REPLACE PACKAGE BODY stnd_build_table_cleanup
AS
PROCEDURE drop_tables(table_in CLOB)
IS
TYPE cur_type is REF CURSOR;
c cur_type;
query_string VARCHAR(300);
loop_string VARCHAR(300);
table_name VARCHAR(100);
BEGIN
loop_string := 'SELECT tablenames FROM :table';
OPEN c FOR loop_string USING table_in;
LOOP
FETCH c INTO table_name;
query_string := 'DROP TABLE ' || table_name || ' CASCADE CONSTRAINTS';
-- dbms_output.PUT_LINE (query_string);
EXECUTE IMMEDIATE query_string;
EXIT WHEN c%NOTFOUND;
END LOOP ;
CLOSE c;
END drop_tables;
Here is the error I get when I try to call my function: Error report -
ORA-00903: invalid table name
ORA-06512: at "AMS_NYS.STND_BUILD_TABLE_CLEANUP", line 13
ORA-06512: at line 2
00903. 00000 - "invalid table name"
*Cause:
*Action:
Thanks!
Here's one possibility. Note that I coded this as a standalone procedure for simplicity.
CREATE OR REPLACE TYPE table_type IS TABLE OF VARCHAR2(128);
CREATE OR REPLACE PROCEDURE drop_tables(tables_to_drop_in table_type)
IS
BEGIN
FOR i IN tables_to_drop_in.FIRST .. tables_to_drop_in.LAST LOOP
--DBMS_OUTPUT.PUT_LINE(tables_to_drop_in(i));
EXECUTE IMMEDIATE 'DROP TABLE ' || tables_to_drop_in(i) || ' CASCADE CONSTRAINTS';
END LOOP;
END drop_tables;
DECLARE
tables_to_drop table_type;
BEGIN
tables_to_drop := table_type('TBL1','TBL2', 'TBL3');
drop_tables(tables_to_drop);
END;
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?
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).
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
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;
I have a table with columns insert,select,where clause,dynamic where clause,group by clause.
Using procedure i need to execute insert into statement and also use dynamic where clause.
I tried the following one however it is giving me an error missing expression.
create or replace PROCEDURE dynamicWhereClause(Datee IN DATE,processId IN NUMBER)
IS
processName VARCHAR2(100);
tablePrefix CONFIG_DETAILS.SOURCE_TABLE%Type;
sourceTableType CONFIG_DETAILS.SOURCE_TABLE_TYPE%Type;
insertClause CONFIG_DETAILS.INSERT_CLAUSE%Type;
selectClause CONFIG_DETAILS.SELECT_CLAUSE%Type;
whereClause CONFIG_DETAILS.WHERE_CLAUSE%Type;
onUpdateClause CONFIG_DETAILS.ON_UPDATE_CLAUSE%Type;
groupByClause CONFIG_DETAILS.GROUP_BY_CLAUSE%Type;
orderByClause CONFIG_DETAILS.ORDER_BY_CLAUSE%Type;
isDynamicWhereClause CONFIG_DETAILS.IS_DYNAMIC_WHERE_CLAUSE%Type;
tableName VARCHAR2(50);
Process_Date DATE;
processQuery VARCHAR2(6000 BYTE);
CURSOR Process_Report IS
select NAME,SOURCE_TABLE,SOURCE_TABLE_TYPE,INSERT_CLAUSE,SELECT_CLAUSE,WHERE_CLAUSE,ON_UPDATE_CLAUSE,GROUP_BY_CLAUSE,ORDER_BY_CLAUSE,IS_DYNAMIC_WHERE_CLAUSE FROM
CONFIG_DETAILS where ID=processId;
BEGIN
OPEN Process_Report;
LOOP
FETCH Process_Report INTO processName,tablePrefix,sourceTableType,insertClause,selectClause,whereClause,onUpdateClause,groupByClause,orderByClause,isDynamicWhereClause;
EXIT when Process_Report%NOTFOUND;
tableName := getSourceTableName(tablePrefix,sourceTableType,processDate);
Process_Date := processDate;
processQuery := insertClause || selectClause ||' from ' || tableName ||' ' ||
nvl(whereClause,'') ||''||nvl(groupByClause,'') ||''||nvl(orderByClause,'') ||''||nvl(onUpdateClause,'');
dbms_output.put_line(processQuery);
IF isDynamicWhereClause = 'Y'
THEN
dbms_output.put_line(processQuery);
EXECUTE IMMEDIATE processQuery USING Process_Date;
ELSE
EXECUTE IMMEDIATE processQuery;
END IF;
END LOOP;
CLOSE Process_Report;
END;
While executing the proc it is giving me the below error.
Error report -
ORA-00936: missing expression
ORA-06512: at "Mytest.dynamicWhereClause", line 44
ORA-06512: at line 1
00936. 00000 - "missing expression"
Please assist me further
Thanks
Your questions is not 100% clear . you saying after DATEE is being empty, are you assigning a variable after date ? the below is example of how using execute immediate with a variable. Note how is the bind variable :i is showing in the print.
set serveroutput on size 1000
/
declare t number(4) :=10;
txt varchar2(100);
begin
txt :='INSERT INTO TAB (ID) values (:i)';
dbms_output.put_line(t || ' ' || txt);
execute immediate txt using T;
end;
/
PL/SQL procedure successfully completed
10 INSERT INTO TAB (ID) values (:i)
I would like to pass in a dynamic column name to calculate its standard deviation,in oracle, the following is the code:
CREATE OR REPLACE
PROCEDURE ReportCalculate
(
param_columnName IN VARCHAR2 DEFAULT 'COMPUTED_CP_MLIFTOFF_KNOT9OR10'
)
AS
sqlstr VARCHAR2(500);
result NUMBER;
BEGIN
sqlstr:='select stddev(:col) from LIDISUDUXIAO where 1=1 and NO_10_LIMITSIGN_DEPART_ID<>0';
execute immediate sqlstr into result using param_columnName;
DBMS_OUTPUT.PUT_LINE(result);
END;
I call it with the default parameters,the error message is:
Procedure execution failed
ORA-01722: invalid number
ORA-06512: at "AGS.REPORTCALCULATE", line 10
ORA-06512: at line 1
How can i solve it?
A column name cannot be used as parameter of a query. You need to edit the sqlstr variable to include the provided param_columnName in the query itself before executing it:
CREATE OR REPLACE
PROCEDURE ReportCalculate
(
param_columnName IN VARCHAR2 DEFAULT 'COMPUTED_CP_MLIFTOFF_KNOT9OR10'
)
AS
sqlstr VARCHAR2(500);
result NUMBER;
BEGIN
sqlstr:='select stddev(' || param_columnName || ') from LIDISUDUXIAO where 1=1 and NO_10_LIMITSIGN_DEPART_ID<>0';
execute immediate sqlstr into result;
DBMS_OUTPUT.PUT_LINE(result);
END;
In PL/SQL, you can specify the values for the IN operator using concatenation:
v_sql := 'select field1
from table1
where field2 in (' || v_list || ')';
Is it possible to do the same using a variable?
v_sql := 'select field1
from table1
where field2 in (:v_list)';
If so, how?
EDIT: With reference to Marcin's answer, how do I select from the resultant table?
declare
cursor c_get_csv_as_tables is
select in_list(food_list) food_list
from emp_food
where emp_type = 'PERM';
cursor c_get_food_list (v_food_table varchar2Table)is
select *
from v_food_table;
begin
for i in c_get_csv_as_tables loop
for j in c_get_food_list(i.food_list) loop
dbms_output.put_line(j.element);
end loop;
end loop;
end;
I get the following error:
ORA-06550: line 10, column 6:
PL/SQL: ORA-00942: table or view does not exist
ORA-06550: line 9, column 1:
PL/SQL: SQL Statement ignored
ORA-06550: line 15, column 34:
PLS-00364: loop index variable 'J' use is invalid
ORA-06550: line 15, column 13:
PL/SQL: Statement ignored
Like in #Sathya link, you can bind the varray (I took #Codo example):
CREATE OR REPLACE TYPE str_tab_type IS VARRAY(10) OF VARCHAR2(200);
/
DECLARE
l_str_tab str_tab_type;
l_count NUMBER;
v_sql varchar2(3000);
BEGIN
l_str_tab := str_tab_type();
l_str_tab.extend(2);
l_str_tab(1) := 'TABLE';
l_str_tab(2) := 'INDEX';
v_sql := 'SELECT COUNT(*) FROM all_objects WHERE object_type IN (SELECT COLUMN_VALUE FROM TABLE(:v_list))';
execute immediate v_sql into l_count using l_str_tab;
dbms_output.put_line(l_count);
END;
/
UPDATE: the first command can be replaced with:
CREATE OR REPLACE TYPE str_tab_type IS TABLE OF VARCHAR2(200);
/
then call:
l_str_tab.extend(1);
when ever you add a value
Unfortunately you cannot bind a list like this, however you can use a table function. Read this
Here's an example of usage based on your code:
declare
cursor c_get_csv_as_tables is
select in_list(food_list) food_list
from emp_food
where emp_type = 'PERM';
cursor c_get_food_list (v_food_table varchar2Table)is
select column_value food
from TABLE(v_food_table);
begin
for i in c_get_csv_as_tables loop
for j in c_get_food_list(i.food_list) loop
dbms_output.put_line(j.food);
end loop;
end loop;
end;
I used here a column_value pseudocolumn
Bind variable can be used in Oracle SQL query with "in" clause.
Works in 10g; I don't know about other versions.
Bind variable is varchar up to 4000 characters.
Example: Bind variable containing comma-separated list of values, e.g.
:bindvar = 1,2,3,4,5
select * from mytable
where myfield in
(
SELECT regexp_substr(:bindvar,'[^,]+', 1, level) items
FROM dual
CONNECT BY regexp_substr(:bindvar, '[^,]+', 1, level) is not null
);
As per #Marcin's answer you can't do this, however, there's a fair bit to add to that, as your query should actually work, i.e. run.
Simply put, you cannot use a bind variable for a table or column. Not only that, bind variables they are assumed to be a character, so if you want a number you have to use to_number(:b1) etc.
This is where your query falls down. As you're passing in a string Oracle assumes that your entire list is a single string. Thus you are effectively running:
select field1
from table1
where field2 = v_list
There is no reason why you can't do this a different way though. I'm going to assume you're dynamically creating v_list, which means that all you need to do is create this list differently. A series of or conditions is, purportedly :-), no different to using an in.
By purportedly, I mean never rely on something that's untested. Although Tom does say in the link that there may be performance constraints there's no guarantee that it wasn't quicker than using in to begin with. The best thing to do is to run the trace on your query and his and see what difference there is, if any.
SQL> set serveroutput on
SQL>
SQL> declare
2
3 l_string varchar2(32767);
4 l_count number;
5
6 begin
7
8 for xx in ( select rownum as rnum, a.*
9 from user_tables a
10 where rownum < 20 ) loop
11
12 if xx.rnum = 1 then
13 l_string := 'table_name = ''' || xx.table_name || '''';
14 else
15 l_string := l_string || ' or table_name = ''' || xx.table_name || '
''';
16 end if;
17
18 end loop;
19
20 execute immediate 'select count(*)
21 from user_tables
22 where ' || l_string
23 into l_count
24 ;
25
26 dbms_output.put_line('count is ' || l_count);
27
28 end;
29 /
count is 19
PL/SQL procedure successfully completed.