How can we Search for a given string in all fields of an entire schema for Oracle?
is there an sql script to do the above in Oracle? if yes, how?
Can we do it by any other script?
"ALL_TAB_COLUMNS" is a systable, have all table columns data type etc.
"USER_TAB_COLUMNS" is a systable, have all table columns data type etc (which owner is current user). (Thanks Rene)
An Example:
SET SERVEROUTPUT ON SIZE 100000 -- maybe you have a lot of table and columns
DECLARE
matches INTEGER;
BEGIN
FOR columns IN (SELECT table_name, column_name FROM user_tab_columns where data_type = 'VARCHAR2') LOOP
EXECUTE IMMEDIATE
'SELECT COUNT(*) FROM '||t.table_name||' WHERE instr('||t.column_name||' , :1) > 0'
INTO matches
USING 'What you search';
IF matches > 0 THEN
dbms_output.put_line( t.table_name ||' '||t.column_name||' '||matches );
END IF;
END LOOP;
END;
/
this query will output table_name '' column_name'' and count, if you have standart column and table names, you can change query as IF columns > 0 then write a query UNION in loop and return the cursor, or return a table,
Can we do it by any other script?
You can dump the database to disk as text, then use grep.
Related
I have a 9 digit number, say "234234234", is there a way to find or check its appearance in my database, like in which particular schema or procedure does it fall? and list out all the tables and columns which has that value in pl/sql developer
This query only searches in stored objects that user is allowed to access (procedure, function, package, ...). You could refer to this
Not sure if there is one way to search for that value in all database table.
SELECT *
FROM all_source
WHERE text LIKE '%234234234%';
--AND owner = 'SCHEMA_NAME';
The below block identifies the given string's presence across all the tables in your DB.
declare
num_rows number;
sql_text varchar2(250);
sql_info varchar2(100);
begin
dbms_output.enable(1000000);
for x in (select table_name, column_name from dba_tab_columns
where data_type in ('VARCHAR','VARCHAR2','CHAR')
and owner <> 'SYSTEM')
loop
sql_text:='select count(*) into :num_rows from SYSTEM.'||x.table_name||' where '||x.column_name||' like ''%234234234%''';
-- dbms_output.put_line (sql_text);
execute immediate sql_text into num_rows;
if num_rows>0
then
sql_info:='Table: '||x.table_name||' contains the string';
dbms_output.put_line (sql_info);
end if;
end loop;
end;
/
I have a table that contains a list of table names.
I would like to search each of these tables one by one to see if they contain a particular element (the primary key, specified at the start of the script).
I would like to return a list of all of the tables that this element is present in (ideally distinct).
I'm fairly new to this PL/SQL "not just a query" stuff. so i apologise in advance for the attrocious attempt you are about to see, but hopefully it illustrates what i'm going for:
PROCEDURE CHECK_FOR_ELEMENTS
BEGIN
DECLARE
ELEMENT_KEY varchar(5):=X78ehryfk;
RNUM_MAX int :=167;
----create output table for script
create or replace table ALL_TABLES CONTAINING_&ELEMENT_KEY
(ELEMENT_KEY VARCHAR(255),
TABLE_NAME varchar(255))
/
commit;
---begin loop over rnum;
FOR rnum_counter in 1..&RNUM_MAX
LOOP
--define this statement as variable TABLE_NAME_VAR
select table_name from (select * from (select table_name, rownum as rnum
from all_tables
where owner = 'RMS'
and table_name like 'ABC%'
and table_name not like '%STG'
and table_name not like '%BKP'
and num_rows>0
order by num_rows desc)
where rnum = rnum_counter
)INTO TABLE_NAME_VAR
;
----run below to collect row, if it exists, from table being searched
SQL_STMT:='INSERT INTO ALL_TABLES CONTAINING_&ELEMENT_KEY
SELECT distinct key,'||TABLE_NAME_VAR||' as UMF from
'||TABLE_NAME_VAR||
' where key like 'ELEMENT_KEY-%'
execute immediate SQL_STMT;
commit;
---insert row into table created for output
END LOOP
---loop over all tables
END;
The main error message i get is that TABLE_NAME_VAR is not a valid table name within the dynamic SQL statement. I've googled a bit and i now understand you can't use variables to input table names in this way.
Any help is greatly appreciated!
Thankyou!
Here, I tried to clean it up for you. Let me know if you still get errors.
create or replace PROCEDURE CHECK_FOR_ELEMENTS is
ELEMENT_KEY varchar2(14):='X78ehryfk';
RNUM_MAX int :=167;
TABLE_NAME_VAR varchar2(30);
SQL_STMT varchar2(4000);
BEGIN
----create output table for script
begin
execute immediate 'drop table ALL_TABLES_WITH_' || element_key;
exception when others then null;
end;
execute immediate 'create table ALL_TABLES_WITH_' || element_key || '
(ELEMENT_KEY VARCHAR2(255), -- does this need to be 255 characters?
TABLE_NAME varchar2(30))';
--- implicit cursor loop
FOR rnum_row in (select table_name, rownum as rnum
from all_tables
where owner = 'RMS'
and table_name like 'ABC%'
and table_name not like '%STG'
and table_name not like '%BKP'
and num_rows>0
order by num_rows desc)
LOOP
if rnum_row.rnum > RNUM_MAX
then exit;
end if;
TABLE_NAME_VAR := rnum_row.table_name;
----run below to collect row, if it exists, from table being searched
SQL_STMT:='INSERT INTO ALL_TABLES_WITH_' || element_key || '
(ELEMENT_KEY, TABLE_NAME)
SELECT distinct key, :1 as UMF from
'||TABLE_NAME_VAR||
' where key like :2';
execute immediate SQL_STMT using TABLE_NAME_VAR, element_key || '-%';
---insert row into table created for output
END LOOP;
commit;
---loop over all tables
END CHECK_FOR_ELEMENTS;
/
This question already has answers here:
Get counts of all tables in a schema
(6 answers)
Closed 5 years ago.
I need to find out the count of large number of tables (eg: 40,50 tables) in below format where I will provide the table set (as parameters or list of tables).
In other words, I need to find the count of tables as below for a user defined table set.
TABLE_NAME : ROW_COUNT
table_a : 1000000
table_b : 200000
table_c : 450000
table_d : 80000
etc..
1.) Is there a inbuilt option in sql developer or toad or any other tool to get count of multiple tables straight away?
2.) Is there a a sql statement or a pl/sql script that I can get above output?
Note: Please note that I don't want to get the count of all the tables in schema. I want only specific list of tables. Ex: lets say there is 100 tables in the schema but I want only the count of 25 tables which i mention
A PL/SQL Block like this will work. Uses EXECUTE IMMEDIATE to dynamically execute a query string formed from table names fetched from ALL_TABLES,
DECLARE
V_YOUR_SCHEMA VARCHAR2(30) ;
V_COUNT NUMBER;
BEGIN
V_YOUR_SCHEMA :='SCHEMA_NAME';
FOR L_TABLE_NAME IN (SELECT TABLE_NAME FROM ALL_TABLES WHERE SCHEMA_NAME = v_YOUR_SCHEMA)
LOOP
EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM ' || v_YOUR_SCHEMA ||'.' ||L_TABLE_NAME INTO V_COUNT;
DBMS_OUTPUT.PUT_LINE(L_TABLE_NAME||' : '||V_COUNT);
END LOOP;
END;
/
Snippet for Defined list of table names:
DECLARE
V_YOUR_SCHEMA VARCHAR2(30) ;
V_COUNT NUMBER;
V_TABLE_LIST DBMS_SQL.VARCHAR2_TABLE;
TYPE V_LIST_TYPE is VARRAY(50) of VARCHAR2(30);
BEGIN
V_YOUR_SCHEMA :='SCHEMA_NAME';
V_TABLE_LIST V_LIST_TYPE := V_LIST_TYPE('TABLE1', 'TABLE2', 'TABLE3');
FOR L_ITER IN 1..V_TABLE_LIST.COUNT
LOOP
EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM ' || v_YOUR_SCHEMA ||'.' ||V_TABLE_LIST(L_ITER) INTO V_COUNT;
DBMS_OUTPUT.PUT_LINE(V_TABLE_LIST(L_ITER)||' : '||V_COUNT);
END LOOP;
END;
/
Note: View ALL_TABLES also has a column num_rows, which is populated
only if you collect statistics on the table with the DBMS_STATS package.
I want to get all the ids in a database from all columns that have an ID field.
My script so far is:
BEGIN
FOR tname IN (select table_name from all_tab_columns where column_name = 'ID' and owner='PACC_USER') LOOP
EXECUTE IMMEDIATE
'select unique id from ' || tname;
END LOOP;
End;
I get the error PLS-00306: wrong number or types of arguments in call to '||'. What is the problem exactly? Any help is welcomed :)
In your code tname is a record for referencing the cursor result set i.e. a namespace not an attribute. Fix it like this:
BEGIN
FOR tname IN (select table_name
from all_tab_columns
where column_name = 'ID' and owner='PACC_USER')
LOOP
EXECUTE IMMEDIATE
'select unique id from ' || tname.table_name ;
END LOOP;
End;
One would hope that a column called ID would return unique rows without needing the unique keyword but we live in troubled times.
Your code needs to select results into something: PL/SQL is not T-SQL, it requires target variables. So let's improve your code a bit more.
declare
ids_nt sys.dbms-debug_vc2coll;
BEGIN
FOR tname IN (select table_name
from all_tab_columns
where column_name = 'ID' and owner='PACC_USER')
LOOP
EXECUTE IMMEDIATE
'select unique id from ' || tname.table_name
bulk collect into ids_nt;
dbms_output.put_line('IDS for table '|| tname.table_name);
for idx in ids_nt.first() .. ids_nt.last loop
dbms_output.put_line(ids_nt(idx));
end loop;
END LOOP;
End;
Maybe this isn't the kind of thing you want to do with the IDs. If so please edit your question to clarify your intent.
Select column_name,table name from all_tab_column where upper(column_name)=upper('Id') ;
I need to get the maximum length of data per each column in a bunch of tables. I'm okay with doing each table individually but I'm looking for a way to loop through all the columns in a table at least.
I'm currently using the below query to get max of each column-
select max(length(exampleColumnName))
from exampleSchema.exampleTableName;
I'm basically replacing the exampleColumnName with each column in a table.
I've already went through 3-4 threads but none of them were working for me either because they weren't for Oracle or they had more details that I required (and I couldn't pick the part I needed).
I'd prefer to have it in SQL than in PLSQL as I don't have any create privileges and won't be able to create any PLSQL objects.
Got the below query to work -
DECLARE
max_length INTEGER; --Declare a variable to store max length in.
v_owner VARCHAR2(255) :='exampleSchema'; -- Type the owner of the tables you are looking at
BEGIN
-- loop through column names in all_tab_columns for a given table
FOR t IN (SELECT table_name, column_name FROM all_tab_cols where owner=v_owner and table_name = 'exampleTableName') LOOP
EXECUTE IMMEDIATE
-- store maximum length of each looped column in max_length variable
'select nvl(max(length('||t.column_name||')),0) FROM '||t.table_name
INTO max_length;
IF max_length >= 0 THEN -- this isn't really necessary but just to ignore empty columns. nvl might work as well
dbms_output.put_line( t.table_name ||' '||t.column_name||' '||max_length ); --print the tableName, columnName and max length
END IF;
END LOOP;
END;
Do let me know if the comments explain it sufficiently, else I'll try to do better. Removing table_name = 'exampleTableName' might loop for all tables as well, but this is okay for me right now.
You can try this; although it uses PL/SQL it will work from within SQL-Plus. It doesn't loop. Hopefully you don't have so many columns that the SELECT query can't fit in 32,767 characters!
SET SERVEROUTPUT ON
DECLARE
v_sql VARCHAR2(32767);
v_result NUMBER;
BEGIN
SELECT 'SELECT GREATEST(' || column_list || ') FROM ' || table_name
INTO v_sql
FROM (
SELECT table_name, LISTAGG('MAX(LENGTH(' || column_name || '))', ',') WITHIN GROUP (ORDER BY NULL) AS column_list
FROM all_tab_columns
WHERE owner = 'EXAMPLE_SCHEMA'
AND table_name = 'EXAMPLE_TABLE'
GROUP BY table_name
);
EXECUTE IMMEDIATE v_sql INTO v_result;
DBMS_OUTPUT.PUT_LINE(v_result);
END;
/