I have a query against two databases that I'm trying to execute. The first table is just user information and is referenced by a privilege table. For my query I'm trying to find a set of super users, they are users that have every current privilege in the privilege table. It is set up as follows:
create table MEMBER
( id int not null,
name varchar(10),
bdate date,
sex char,
pc_id int not null,
PRIMARY KEY (mid),
FOREIGN KEY (pc_id) REFERENCES PLEDGECLASS(id))
create table MEMBER_PRIVILEGE
( mid int not null,
pid int not null,
PRIMARY KEY (mid,pid),
FOREIGN KEY (mid) REFERENCES MEMBER(id),
FOREIGN KEY (pid) REFERENCES PRIVILEGE(id))
create table PRIVILEGE
( id int,
pname varchar(15)
PRIMARY KEY(id))
Although obviously the incorrect query, I'm trying to do something equivalent to the following:
Select name
From MEMBER,MEMBER_PRIVILEGE
Where id=mid AND pid = ALL (select id
From PRIVILEGE);
SELECT *
FROM MEMBER
WHERE NOT EXISTS (
SELECT *
FROM MEMBER_PRIVILEGE LEFT JOIN PRIVILEGE ON MEMBER_PRIVILEGE.pid = PRIVILEGE.id)
WHERE MEMBER_PRIVILEGE.mid = MEMBER.id AND PRIVILEGE.id IS NULL
)
Try this ::
Select name, (select count(id) from PRIVILIGE) as p_count
From MEMBER m
inner join MEMBER_PRIVILEGE mp on (m.id=mp.mid)
group by mp.mid having count(*) = p_count;
Related
I have three tables, patient_set, user and map_patient_set_user. I'm trying to do an inner join between patient_set and user and also patient_set and map_patient_set_user in a single query. The query should return all the patient_sets for which a given user is the creator or care_coordinator. But patient sets can also be returned if they have the required permission (specified in map_patient_set_user). The following query ends up returning data from only the map_patient_set_user and ignores the join between patient_set and user. What should be the correct way to implement this join.
//Query
SELECT *
FROM (
patient_set AS a
JOIN user AS b ON a.creator_id = b.user_id OR a.care_coordinator = b.user_id
JOIN map_patient_set_user AS m ON a.patient_set_id = m.patient_set_id
)
WHERE
b.user_id = UUID_TO_BIN_F(:id)
OR
m.permission = 'view_all'
ORDER BY created DESC;
//Tables
CREATE TABLE user (
user_id BINARY(16) PRIMARY KEY NOT NULL,
first_name VARCHAR(55) NOT NULL,
last_name VARCHAR(25) NOT NULL,
org_id INT UNSIGNED,
FOREIGN KEY (org_id) REFERENCES organization(org_id),
lru_patient_set_id BINARY(16)
);
CREATE TABLE patient_set (
patient_set_id BINARY(16) PRIMARY KEY NOT NULL,
creator_id BINARY(16) NOT NULL,
FOREIGN KEY (creator_id) REFERENCES user(user_id),
created DATETIME NOT NULL,
last_updated DATETIME,
care_coordinator BINARY(16),
FOREIGN KEY (care_coordinator) REFERENCES user(user_id),
num_patient_updates INT NOT NULL,
name VARCHAR(100)
);
CREATE TABLE map_patient_set_user (
patient_set_id BINARY(16),
user_id BINARY(16),
permission ENUM('view_no_personal', 'view_all', 'edit_all'),
FOREIGN KEY(patient_set_id) REFERENCES patient_set(patient_set_id),
FOREIGN KEY(user_id) REFERENCES user(user_id)
);
I have a table of ParentsSchoolContact, which a parentId have foreign key to the parentId:
CREATE TABLE ParentsSchoolContact (
contactId int NOT NULL AUTO_INCREMENT,
parentId int NOT NULL,
name varchar(60) NOT NULL,
age varchar(60) NOT NULL,
PRIMARY KEY (contactId),
FOREIGN KEY (parentId) REFERENCES Parent(parentId)
);
and I have a parent and contact table that keeps the relation between a kid and a parent:
CREATE TABLE ParentAndContact (
parentId int NOT NULL,
contactId int NOT NULL,
PRIMARY KEY (contactId, parentId)
);
I want to get all the contacts related to a specific parent that i have its id, would that be the right query?
SELECT c.name, c.age
FROM ParentsSchoolContact c
INNER JOIN ParentAndKid pc ON pc.contactId = c.contactId
AND c.parentId = myParentVariable
AND pc.parentId = myParentVariable
wanted to make sure this query dosent fall in some case you could think about :)
thanks!
For me, i see that the ParentAndContact table is redundant. Usually the Parents details are in one table and ContactID/Kids details are in another table (having attributes eg. courses which the kids enrolled, details of the kids).
Assuming that you want to get all the contacts related to a specific parent that you have its id from the available tables (ParentsSchoolContact,ParentAndContact), You can just write a simple query to retrieve the information from ParentsSchoolContact table as of below:-
select contactId, parentId, name, age
from ParentsSchoolContact
where parentId = myParentVariable
Do let me know if i miss out anything.
I created a database with following tables :
CREATE SCHEMA IF NOT EXISTS `facturatiedatabase` ;
USE `facturatiedatabase` ;
DROP TABLE IF EXISTS tblAddress ;
DROP TABLE IF EXISTS tblContact ;
DROP TABLE IF EXISTS tblCustomers ;
CREATE TABLE tblCustomers (
customerID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
vat VARCHAR(30) NOT NULL,
customerVisible varchar(1) NOT NULL DEFAULT 'T'
) ENGINE=InnoDB;
CREATE TABLE tblContact (
contactID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
email VARCHAR(100),
phone VARCHAR(100),
customerID int,
CONSTRAINT FK_customerID_Contact FOREIGN KEY (customerID) REFERENCES tblCustomers(customerID)
) ENGINE=InnoDB;
CREATE TABLE tblAddress (
addressID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
street VARCHAR(100),
houseNumber VARCHAR(15),
city VARCHAR (100),
country VARCHAR (100),
customerID int,
CONSTRAINT FK_customerID_Adress FOREIGN KEY (customerID) REFERENCES tblCustomers(customerID)
) ENGINE=InnoDB;
INSERT INTO tblCustomers (firstname, lastname,vat)
VALUES ("John","Doe","UV45856855");
INSERT INTO tblContact (customerID,phone, email)
VALUES ((SELECT DISTINCT LAST_INSERT_ID() FROM tblCustomers), "0000001","Johndoe#gmail.com");
INSERT INTO tblAddress (customerID,street,housenumber,city,country)
VALUES ((SELECT DISTINCT LAST_INSERT_ID() FROM tblCustomers), "berkenlaan","1a","Harelbeke","Belgie");
But when i try following inner join it gives me the following error :
LIMIT 0, 1000 Error Code: 1052. Column 'customerID' in field list is ambiguous 0.000 sec.
SELECT customerID, firstname, lastname, vat,email
FROM tblCustomers
INNER JOIN tblContact on tblCustomers.customerID = tblContact.contactID
The error message says it all: the column name customerID is contained in both tables. So which value should mysql select? That is ambiguous, therefore the error.
Have a try with this variant:
SELECT tblCustomers.customerID AS customerID, firstname, lastname, vat,email
FROM tblCustomers
INNER JOIN tblContact on tblCustomers.customerID = tblContact.contactID
(or pick that other tables's column with the same if you need that one...)
And, frankly, I doubt your ON clause is the one you want to use. Shouldn't that be ON tblCustomers.customerID = tblContact.customerID instead?
I have three tables...users, user_info, and quota_levels. They look like this:
CREATE TABLE users (
id INT NOT NULL AUTO_INCREMENT,
name VARCHAR(31) NOT NULL,
password VARCHAR(33) NOT NULL,
PRIMARY KEY (id)
);
CREATE TABLE user_info (
userID INT UNSIGNED NOT NULL,
firstName VARCHAR(32),
lastName VARCHAR(32),
phone CHAR(14),
address VARCHAR(128),
birthdate DATE,
misc TEXT,
quotaLevel VARCHAR(32),
PRIMARY KEY (userID)
);
CREATE TABLE quota_levels (
quotaLevel VARCHAR(32) NOT NULL,
quota1 INT NOT NULL,
quota2 INT NOT NULL,
PRIMARY KEY (level)
);
Every user will have an entry in the users table, but not necessarily in the user_info table. Each user in the user_info table has a quotaLevel corresponding to the quotaLevel column in the quota_levels table. Possible values for quotaLevel are BRONZE, SILVER, GOLD, and PLATINUM.
I could go into a long explanation of why it is set up this way, but it would be quicker to just say that this structure cannot be changed.
If the user exists, I want to get the quota1 value of their quotaLevel. If the user doesn't exist, the quota1 value for BRONZE should be returned.
I want to do this with ONE query. Can it be done and how?
SELECT u.Name,
COALESCE(ql.quota1, (SELECT quota1 FROM quota_level WHERE quotaLevel = 'BRONZE'))
FROM users u
LEFT JOIN user_info ui
INNER JOIN quota_level ql
ON ui.quotaLevel = ql.quotaLevel
ON u.id = ui.userID
I need to create a new table in oracle with only the most current date for each record (step 1), and calculate days between (step 2).
Your suggestions are greatly appreciated:)))
Step 1: First I need to find the max (Mod_date) for each record from table USERS.
TABLE: USERS
Name................Mod_Date
Jason Martin....... 25-JUL-89
Al Mathews......... 21-MAR-89
James Smith........ 12-DEC-88
Robert Black....... 15-JAN-84
Jason Martin....... 25-JUL-99
Al Mathews......... 21-MAR-96
James Smith........ 12-DEC-98
Robert Black....... 15-JAN-94
*TABLE_DESIRED_RESULTS_step1
Name............... Max(Mod_Date)
Jason Martin....... 25-JUL-99
Al Mathews......... 21-MAR-96
James Smith........12-DEC-98
Robert Black.......15-JAN-94
Step 2: Calculate “Number of Days Between Regist_Date and Mod_Date” & add it to the table.
TABLE: REGISTRATION
Name................Regist_Date
Jason Martin.........20-JUL-99
Al Mathews...........23-MAR-96
Robert Black.........20-JAN-94
*TABLE_DESIRED_RESULTS_step2
Name...............Max(Mod_Date).....Number of Days Between Regist_Date and Mod_Date
Jason Martin...... 25-JUL-99..........5
Al Mathews........ 21-MAR-96.........-2
James Smith....... 12-DEC-98..........null
Robert Black...... 15-JAN-94..........-5
*Please note, this data is made up and I already have existing unions and joins to which I have to add this logic. Thanks and have a nice day!
here is my updated answer with a sample.
The important thing is that your date column have the DATE type.
Here is the tables and data following your specification.
CREATE TABLE USERS
(
ID_USER NUMBER(6) NOT NULL,
NAME VARCHAR2(64) NOT NULL,
MOD_DATE DATE NOT NULL,
CONSTRAINT PK_user PRIMARY KEY (ID_USER)
) ;
INSERT INTO USERS VALUES (1,'Jason Martin',TO_DATE('25-07-1989','DD-MM-YYYY'));
INSERT INTO USERS VALUES (2,'Al Mathews',TO_DATE('21-03-1989','DD-MM-YYYY'));
INSERT INTO USERS VALUES (3,'James Smith',TO_DATE('12-12-1988','DD-MM-YYYY'));
INSERT INTO USERS VALUES (4,'Robert Black',TO_DATE('15-01-1984','DD-MM-YYYY'));
INSERT INTO USERS VALUES (5,'Jason Martin',TO_DATE('25-07-1999','DD-MM-YYYY'));
INSERT INTO USERS VALUES (6,'Al Mathews',TO_DATE('21-03-1996','DD-MM-YYYY'));
INSERT INTO USERS VALUES (7,'James Smith',TO_DATE('12-12-1998','DD-MM-YYYY'));
INSERT INTO USERS VALUES (8,'Robert Black',TO_DATE('15-01-1994','DD-MM-YYYY'));
CREATE TABLE REGISTRATION
(
ID_REG NUMBER(6) NOT NULL,
NAME VARCHAR2(64) NOT NULL,
REGIST_DATE DATE NOT NULL,
CONSTRAINT PK_reg PRIMARY KEY (ID_REG)
) ;
INSERT INTO REGISTRATION VALUES (1,'Jason Martin',TO_DATE('20-07-1999','DD-MM-YYYY'));
INSERT INTO REGISTRATION VALUES (2,'Al Mathews',TO_DATE('23-03-1996','DD-MM-YYYY'));
INSERT INTO REGISTRATION VALUES (3,'Robert Black',TO_DATE('20-01-1994','DD-MM-YYYY'));
First step
CREATE TABLE TABLE_DESIRED_RESULTS_step1
AS (
SELECT
u.NAME
, max(u.MOD_DATE) as "maxi"
FROM USERS u
GROUP BY u.NAME);
second step
CREATE TABLE TABLE_DESIRED_RESULTS_step2
AS (
SELECT
t.NAME
,t."maxi"
, (t."maxi" - r.REGIST_DATE ) as "Nbdays bw RegD and Mod_D"
FROM TABLE_DESIRED_RESULTS_step1 t LEFT OUTER JOIN REGISTRATION r
ON t.NAME = r.NAME);
The trick here is that LEFT OUTER JOIN allows null value if there is no match with the join.
But there is a database design concern for me.
If you have 2 users with the exact same name , you will merge 2 persons in one.
Here a solution using IDs and doing the join on the IDs.
CREATE TABLE USERS
(
ID_USER NUMBER(6) NOT NULL,
NAME VARCHAR2(64) NOT NULL,
CONSTRAINT PK_user PRIMARY KEY (ID_USER)
) ;
CREATE TABLE MOD_USERS
(
ID_MOD NUMBER(6) NOT NULL,
ID_USER NUMBER(6) NOT NULL,
CONSTRAINT PK_usermod PRIMARY KEY (ID_MOD)
) ;
ALTER TABLE MOD_USERS ADD (
CONSTRAINT FK_user_mod
FOREIGN KEY (ID_USER)
REFERENCES USERS (ID_USER));
CREATE TABLE REGISTRATION
(
ID_REG NUMBER(6) NOT NULL,
ID_USER VARCHAR2(64) NOT NULL,
REGIST_DATE DATE NOT NULL,
CONSTRAINT PK_reg PRIMARY KEY (ID_REG)
) ;
ALTER TABLE REGISTRATION ADD (
CONSTRAINT FK_user_reg
FOREIGN KEY (ID_USER)
REFERENCES USERS (ID_USER))
;
First step
CREATE TABLE TABLE_DESIRED_RESULTS_step1
AS (
SELECT
m.ID_USER , u.NAME
, max(u.MOD_DATE) as "maxi"
FROM USERS u INNER JOIN MOD_USERS m
ON u.ID_USER = m.ID_USER
GROUP BY m.ID_USER , u.NAME);
second step
CREATE TABLE TABLE_DESIRED_RESULTS_step2
AS (
SELECT
t.ID_USER , t.NAME
,t."maxi"
, (t."maxi" - r.REGIST_DATE ) as "Nbdays bw RegD and Mod_D"
FROM TABLE_DESIRED_RESULTS_step1 t LEFT OUTER JOIN REGISTRATION r
ON t.ID_USER = r.ID_USER);