I'm running some queries using PostgreSQL for student purposes. Now I need to encrypt some fields using AES256 to run the same queries and compare the times. Any idea how this can be done using UPDATE table? For example, I need to encrypt the customer address of the table address. Can I do this using UPDATE? Can anyone give me an example? Couldn't find anything online. Thanks.
CREATE EXTENSION IF NOT EXISTS pgcrypto;
INSERT INTO table(name,age) VALUES(
PGP_SYM_ENCRYPT('John', 'AES_KEY'),
PGP_SYM_ENCRYPT('22', 'AES_KEY')
);
UPDATE table SET
(name,age) = (
PGP_SYM_ENCRYPT('Jona', 'AES_KEY'),
PGP_SYM_ENCRYPT('15','AES_KEY')
) WHERE id='1';
SELECT
PGP_SYM_DECRYPT(name::bytea, 'AES_KEY') as name
PGP_SYM_DECRYPT(age::bytea, 'AES_KEY') as age
FROM table WHERE(
LOWER(PGP_SYM_DECRYPT(name::bytea, 'AES_KEY')
LIKE LOWER('%John%')
);
Related
I am using snowflake
I am looking to insert data to a table while using a variable
The purpose of using the variable is so when I can change it without doing a find and replace all
CREATE OR REPLACE TABLE DB1.PUBLIC.HUMANS (
HUMAN VARCHAR(32)
)
;
The following works
INSERT INTO DB1.PUBLIC.HUMANS
SELECT 'SUCESS';
The following does not work
SET EXPORT_TABLE = 'DB1.PUBLIC.HUMANS';
INSERT INTO TABLE($EXPORT_TABLE)
SELECT 'FAILURE';
HOWEVER this works.
SELECT * FROM TABLE($EXPORT_TABLE);
Is there is a way to insert into a table defined by a table literal?
reference documentation:
https://docs.snowflake.com/en/sql-reference/literals-table.html
https://docs.snowflake.com/en/sql-reference/sql/insert.html
======================================================
Update: Answer found by comments below.
Thanks to Biraja Mohanty and Greg Pavlik
To make this work have to wrap the IDENTIFIER().
INSERT INTO IDENTIFIER($EXPORT_TABLE);
https://docs.snowflake.com/en/sql-reference/session-variables.html
SET EXPORT_TABLE = 'DB1.PUBLIC.HUMANS';
INSERT INTO identifier($EXPORT_TABLE)
SELECT 'FAILURE';
I have created an Sql table to trace objects' operation history. I have two columns; first one is the self tracing code and second tracing code is the tracing code for the code coming from source object to target. I created this to be able to look up the route of operations through the objects. You can see the tracing sample table below:
I need to create an sql code to query to show all the route in one table. When I first select the self code, it will be the incoming code for previous rows. There may be more than one incoming code to self and I want to be able to trace all. And I want to reach end until my search is null.
I tried select query like below but I am so new sql and need your help.
SELECT [TracingCode.Self],
[TracingCode.Incoming],
[EquipmentNo]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = (SELECT [TracingCode.Incoming]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = (SELECT [TracingCode.Incoming]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = (SELECT [TracingCode.Incoming]
FROM [MKP_PROCESS_PRODUCT_REPORTS].[dbo].[ProductionTracing.Main]
WHERE [TracingCode.Self] = '028.001.19.2.3')));
To do this kind of parent/child thing to any level without explicitly coding all levels you need to use a recursive CTE.
More details here
https://www.red-gate.com/simple-talk/sql/t-sql-programming/sql-server-cte-basics/
Here is some test data and a solution I came up with. Note that three records actually match 028.001.19.2.3
If this doesn't do what you need please explain further with sample data.
DECLARE #Sample TABLE (
TC_Self CHAR(14) NOT NULL,
TC_In CHAR(14) NOT NULL,
EquipmentNo INT NOT NULL
);
INSERT INTO #Sample (TC_Self, TC_In, EquipmentNo)
VALUES
('028.001.19.2.3','026.003.19.2.2',96),
('028.001.19.2.3','026.001.19.2.2',96),
('028.001.19.2.3','026.002.19.2.2',96),
('028.001.19.2.2','026.002.19.2.1',96),
('028.001.19.2.2','026.002.19.2.1',96),
('028.001.19.2.1','026.002.19.1.1',96),
('026.003.19.2.2','024.501.19.2.5',117),
('024.501.19.2.5','024.501.19.2.6',999),
('024.501.19.2.6','024.501.19.2.7',998);
WITH CTE (RecordType, TC_Self, TC_In, EquipmentNo)
AS
(
-- This is the 'root'
SELECT 'Root' RecordType, TC_Self, TC_In, EquipmentNo FROM #Sample
WHERE TC_Self = '028.001.19.2.3'
UNION ALL
SELECT 'Leaf' RecordType, S.TC_Self, S.TC_In, S.EquipmentNo FROM #Sample S
INNER JOIN CTE
ON S.TC_Self = CTE.TC_In
)
SELECT * FROM CTE;
Also please note that most of the time to generate this answer was taken in generating the sample data to use.
In future when asking questions, people are far more likely to help if you post this sample data generation yourself
I have two tables
Chapters_tbl (chID, name)
Status_tbl (chID, Ch_status)
For every chID in Chapters_tbl, I want to insert that chID into Status_tbl and Ch_status
I can use both a SQL Server stored procedure or Entity Framework in C#.
How can I do this?
Using T-SQL...
INSERT dbo.Status_tbl (chID, Ch_status)
SELECT
c.chID,
Ch_status = 1
FROM
dbo.Chapters c
WHERE
NOT EXISTS (
SELECT 1
FROM dbo.Staus_tbl s
WHERE c.chID = s.chID
);
There is this script in the SQL Server that needs to be converted in PostgreSQL.
Here is the script:
UPDATE Categories_convert SET Categories_convert.ParentID =
Categories_convert_1.CategoryID
FROM Categories_convert LEFT OUTER JOIN Categories_convert AS
Categories_convert_1 ON Categories_convert.MainGroupID_FK =
Categories_convert_1.MainGroupID
WHERE (((Categories_convert.Level)=2));
Then I tried to convert it to postgres. Here is the script:
UPDATE x_tmp_categories_convert SET orig.parentid =
cat2.categoryid
FROM x_tmp_categories_convert LEFT OUTER JOIN x_tmp_categories_convert AS
cat2 ON x_tmp_categories_convert.maingroupid_fk =
x_tmp_categories_convert.maingroupid
WHERE (((cat.level)=2));
Note that I have already created the table Categories_convert of SQLServer to Postgresql and renamed it to x_tmp_categories_convert .
All the fields in postgresql is in lowercase.
Now the problem is when i execute the converted script to postgresql, an error will occur:
ERROR: table name "x_tmp_categories_convert" specified more than once
SQL state: 42712
What I do wrong in the conversion?
UPDATE:
I have tried #a_horse_with_no_name 's answer but it didn't update the records at all. The parentid field is still empty. It is supposed to map all the parentid of that categor based on its maingoupid_fk.
Below is a snapshot of the records after executing the suggested script.
I have opted out the name for disclosure reasons.
Records snapshot link
UPDATE v2:
I am using php to migrate the data so pardon me for the variables used.
Here are the 2 insert statements used before the questioned update script is executed:
INSERT INTO x_tmp_categories_convert(maingroupid,name,vendorid,level,parentid)
VALUES ($id,'$mainGroup',$vendorID,1,Null);
INSERT INTO x_tmp_categories_convert(subgroupid,maingroupid_fk,name,vendorid,level)
VALUES ($id,'$mainGroupId','$subGroup',$vendorID,2);
Also, this is the table definition of the x_tmp_categories_convert table:
CREATE TABLE x_tmp_categories_convert
(
categoryid serial NOT NULL,
parentid double precision,
name character varying(255),
level double precision,
vendorid double precision,
maingroupid integer,
subgroupid integer,
maingroupid_fk integer,
pageid integer,
subgroupid_fk integer,
CONSTRAINT code_pk PRIMARY KEY (categoryid)
)
WITH (
OIDS=FALSE
);
UPDATE v3:
Already SOLVED by a_horse_with_no_name. Thank you
I have edited #a_horse_with_no_name 's answer and to make it work. I guess it is just a copy paste error.
Here is the final script:
UPDATE x_tmp_categories_convert
SET parentid = cat.categoryid
FROM x_tmp_categories_convert AS cat
WHERE x_tmp_categories_convert.maingroupid_fk = cat.maingroupid
AND x_tmp_categories_convert.level = 2;
For #a_horse_with_no_name, I am very grateful to you as I cannot come up with the solution without your help. +1 for you man. Thank you
I have a page that ask of users opinion about a topic. Their responses are then saved into a table. What I want to do is to check how many users selected an option 1,2,3 and 4.
What I have now are multiple T-SQL queries that run successfully but I believe there is a simplified version of the code I have written. I would be grateful if someone can simplify my queries into one single query. Thank you.
here is sample of data in the database table
enter image description here
$sql4 = "SELECT COUNT(CO) FROM GnAppItms WHERE CO='1' AND MountID='".$mountID."'";
$stmt4 = sqlsrv_query($conn2, $sql4);
$row4 = sqlsrv_fetch_array($stmt4);
$sql5="SELECT COUNT(CO) FROM GnAppItms WHERE CO='2' AND MountID='".$mountID."'";
$stmt5=sqlsrv_query($conn2,$sql5);
$row5=sqlsrv_fetch_array($stmt5);
$sql6="SELECT COUNT(CO) FROM GnAppItms WHERE CO='3' AND MountID='".$mountID."'";
$stmt6=sqlsrv_query($conn2,$sql6);
$row6=sqlsrv_fetch_array($stmt6);
$sql7="SELECT COUNT(CO) FROM GnAppItms WHERE CO='4' AND MountID='".$mountID."'";
$stmt7=sqlsrv_query($conn2,$sql7);
$row7=sqlsrv_fetch_array($stmt7);
You can do it by using group by in sql server
example :
create table a
(id int,
mountid nvarchar(100),
co int,
)
insert into a values (1,'aa',1)
insert into a values (2,'aa',2)
insert into a values (3,'aa',1)
insert into a values (4,'aa',2)
insert into a values (5,'aa',3)
Query
select co,count(co)as countofco from a
where mountid='aa'
group by
co
result
co countofco
1 2
2 2
3 1
Note : Beware of SQL injection when you are writing a sql query, so always use parametrized query. You can edit the above example code and make it as a parametrized query for preventing sql injection