I am trying to create a fact table which will display the number of projects per consultant per year. It has 2 dimension tables 1 for time (report_time_dim) and the other for consultants(consultant_dim) then the main fact table (fact_table).
CREATE TABLE fact_table(
fact_key INTEGER NOT NULL,
consultant_key INTEGER NOT NULL,
time_key INTEGER NOT NULL,
no_of_projects_py INTEGER,
no_of_consultants_py INTEGER,
no_of_accounts_py INTEGER,
no_of_proj_per_con_py INTEGER,
fk1_time_key INTEGER NOT NULL,
fk2_consultant_key INTEGER NOT NULL,
-- Specify the PRIMARY KEY constraint for table "fact_table".
-- This indicates which attribute(s) uniquely identify each row of data.
CONSTRAINT pk_fact_table PRIMARY KEY (consultant_key,time_key)
);
CREATE TABLE report_time_dim(
time_key INTEGER NOT NULL,
year INTEGER,
-- Specify the PRIMARY KEY constraint for table "time_dim".
-- This indicates which attribute(s) uniquely identify each row of data.
CONSTRAINT pk_report_time_dim PRIMARY KEY (time_key)
);
CREATE TABLE consultant_dim(
consultant_key INTEGER NOT NULL,
project_id INTEGER,
consultant_id INTEGER,
-- Specify the PRIMARY KEY constraint for table "consultant_dim".
-- This indicates which attribute(s) uniquely identify each row of data.
CONSTRAINT pk_consultant_dim PRIMARY KEY (consultant_key)
);
Each table has it's own surrogate key and I have managed to populate the time and consultant tables successfully, however the issue I'm having is with the fact table. When I try to populate it I get the error ORA-00904: "NO_OF_PROJ_PER_CON_PY": invalid identifier. I am unsure how I can go about fixing this and populating the fact table so it will display the information I want. Any help would be appreciated.
--populate fact_table
--table that lists consultant ids, project ids and years
DROP TABLE temp_fact1;
CREATE TABLE temp_fact1 AS
SELECT project_id, fk2_consultant_id, to_number(to_char(lds_project.pj_actual_start_date, 'YYYY')) as which_year FROM lds_project;
--display table
SELECT * FROM temp_fact1;
--list that counts the number of projects for each consultant and specify the year
DROP TABLE temp_fact2;
CREATE TABLE temp_fact2 AS
SELECT which_year, fk2_consultant_id, COUNT(*) project_id FROM temp_fact1 GROUP by fk2_consultant_id, which_year;
--display table
SELECT * FROM temp_fact2;
--fact table surrogate key
DROP SEQUENCE fact_seq;
CREATE SEQUENCE fact_seq
START WITH 1
INCREMENT BY 1
MAXVALUE 1000000
MINVALUE 1
NOCACHE
NOCYCLE;
--load data
INSERT INTO fact_table (fact_key, consultant_key, time_key, no_of_proj_per_con_py)
SELECT fact_seq.nextval, consultant_key, report_time_dim.time_key, no_of_proj_per_con_py FROM temp_fact2, report_time_dim WHERE temp_fact2.which_year = report_time_dim.year;
Try just running this select by itself - it's the last line in your script.
SELECT fact_seq.nextval,
consultant_key,
report_time_dim.time_key,
no_of_proj_per_con_py
FROM temp_fact2, report_time_dim
WHERE temp_fact2.which_year = report_time_dim.year;
It doesn't look like either TEMP_FACT2 or REPORT_TIME_DIM has a column named no_of_proj_per_con_py. I'm not sure where you want to pull that data from, actually.
Related
I have two tables namely loan_details and loan_his_mapping with 1:N relationship. I need to set the hhf_request_id of loan_details table by the value which is present in the loan_his_mapping table for each loan.
Since the relationship is 1:N , I want to consider the record for each loan from loan_his_mapping table with two conditions mentioned below. The table definitions are as follows:
CREATE TABLE public.loan_details
(
loan_number bigint NOT NULL,
hhf_lob integer,
hhf_request_id integer,
status character varying(100),
CONSTRAINT loan_details_pkey PRIMARY KEY (loan_number)
);
CREATE TABLE public.loan_his_mapping
(
loan_number bigint NOT NULL,
spoc_id integer NOT NULL,
assigned_datetime timestamp without time zone,
loan_spoc_map_id bigint NOT NULL,
line_of_business_id integer,
request_id bigint,
CONSTRAINT loan_spoc_his_map_id PRIMARY KEY (loan_spoc_map_id),
CONSTRAINT fk_loan_spoc_loan_number_his FOREIGN KEY (loan_number)
REFERENCES public.loan_details (loan_number) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION );
The joining conditions while updating are:
The Records of loan_details with hhf_lob = 4 and status='Release'
I should consider that record for updating value among 'N' number of records from loan_his_mapping table with value max(loan_spoc_map_id) for each loan.
The query I have right now
update lsa_loan_details ldet
set hhf_request_id = history.request_id
from loan_his_mapping history
where ldet.loan_number = history.loan_number and ldet.status='Release' and ldet.hhf_lob=4 and
history.line_of_business_id=4 ;
I want to know how to use that record for each loan from loan_his_mapping with max(loan_spoc_map_id) to update column of loan_details table. Please Assist!
You need a sub-query to fetch the row corresponding to the highest loan_spoc_map_id
Something along the lines:
update loan_details ldet
set hhf_request_id = history.request_id
from (
select distinct on (loan_spoc_map_id) loan_number, request_id
from loan_his_mapping lhm
where lhm.line_of_business_id = 4
order by loan_spoc_map_id desc
) as history
where ldet.loan_number = history.loan_number
and ldet.status = 'Release'
and ldet.hhf_lob = 4;
I have a table with columns Form, Appraiser, date and Level
A form can never have same appraisers, and a form can never have same Levels.
I tried to make primary key(Form,appraiser) and primary key(Form,level) but it says that form has multiple primary keys
If i put primary key(form,appraiser,level) people can just insert the same form and appraiser twice but just with a different level and that violates my rules.
|Form|Appraiser|Level|
1 A 1
1 B 2
1 C 3
2 A 1
2 B 2
2 C 3
I believe you could use :-
CREATE TABLE IF NOT EXISTS mytable (form INTEGER, appraiser TEXT, level INTEGER, UNIQUE(form,appraiser), UNIQUE(form,level));
e.g. Using the following
DROP TABLE IF EXISTS mytable;
CREATE TABLE IF NOT EXISTS mytable (form INTEGER, appraiser TEXT, level INTEGER, UNIQUE(form,appraiser), UNIQUE(form,level));
INSERT INTO mytable VALUES
(1,'A',1),(1,'B',2),(1,'C',3),
(2,'A',1),(2,'B',2),(2,'C',3)
;
INSERT OR IGNORE INTO mytable VALUES (1,'A',4);
INSERT OR IGNORE INTO mytable values (1,'Z',1);
The results are :-
INSERT INTO mytable VALUES
(1,'A',1),(1,'B',2),(1,'C',3),
(2,'A',1),(2,'B',2),(2,'C',3)
> Affected rows: 6
> Time: 0.083s
all added
but
INSERT OR IGNORE INTO mytable VALUES (1,'A',4)
> Affected rows: 0
> Time: 0s
not added as A has already apprasied form 1.
and also
INSERT OR IGNORE INTO mytable values (1,'Z',1)
> Affected rows: 0
> Time: 0s
not added as for 1 has already been appraised at level 1
We can try using two junction tables here:
CREATE TABLE form_appraiser (
form_id INTEGER NOT NULL,
appraiser_id INTEGER NOT NULL,
PRIMARY KEY (form_id, appraiser_id)
);
CREATE TABLE form_level (
form_id INTEGER NOT NULL,
level_id INTEGER NOT NULL,
PRIMARY KEY (form_id, level_id)
);
Each of these two tables would ensure that a given form can only be associated with a single appraiser or level.
Then, maintain a third table forms containing one record for each unique form. If you have the additional requirement that a given form can only have one appraiser or level, then add a unique constraint on the form, on one/both of the junction tables.
You can try add the unique constraint as a column identifier.
like
appraiser VARCHAR(50) UNIQUE,
form VARCHAR(50) UNIQUE,
level VARCHAR(50) UNIQUE,
In this case non of the values repeats. If you want a combination of values not to repeat you can use
UNIQUE(form, level)
This means you cannot have a form of the same level repeating.
I use 4 table in database.
Example:
Create table applicant(
Id int not null primary key,
IdName integer
idSkill integer,
idContact integer
Constraint initial foreign key (idName) References Initiale(id)
CONSTRAINT contacT foreign key (idContact) References contact(id)
CONSTRAINT Skills foreign key (idSkill) references skill(id))
Create table Initiale(
Id int not null primary key,
firstname text,
middlename text)
Create table contact(
Id int not null primary key,
phone text,
email text)
Create tabke Skills(
Id int not null primary key,,
Nane text)
I want insert data promptly in 4 table,but i not understand, what get id and insert in applicant.
Create tabke Skills ..... will fail. You should use Create table Skills.
Nor should you have Id int not null primary key,, (two commas), this would fail.
You should very likely be using Id INTEGER PRIMARY KEY not Id int not null primary key.
That is because generally an Id column should be a unique identifier of the row. With SQLite INTEGER PRIMARY KEY has a special meaining whilst INT PRIMARY KEY does not.
That is, if INTEGER PRIMARY KEY is used then the column will be an alias of the rowid column which has to be a unique signed 64 bit integer and importantly if no value is provided when inserting a row then SQLite will assign a unique integer. i.e. the all important Id.
This Id will initially be 1, then likely 2, then likely 3 and so on, although there is no guarantee that the Id will be monotonically increasing.
There are additional errors, mainly comma's omitted. The following should work :-
CREATE TABLE IF NOT EXISTS applicant(
Id INTEGER PRIMARY KEY,
IdName integer,
idSkill integer,
idContact integer,
Constraint initial foreign key (idName) References Initiale(id),
CONSTRAINT contacT foreign key (idContact) References contact(id),
CONSTRAINT Skills foreign key (idSkill) references Skills(id));
Create table IF NOT EXISTS Initiale(
Id INTEGER PRIMARY KEY,
firstname text,
middlename text);
Create table IF NOT EXISTS contact(
Id INTEGER PRIMARY KEY,
phone text,
email text);
Create table IF NOT EXISTS Skills(
Id INTEGER PRIMARY KEY,
Nane text);
You could then insert data along the lines of :-
INSERT INTO Initiale (firstname,middlename) -- Note absence of Id so SQLite will generate
VALUES
('Fred','James'), -- very likely id 1
('Alan','Roy'), -- very likely id 2
('Simon','Gerorge')-- very likely id 3
;
INSERT INTO contact -- alternative way of getting Id generated (specify null for Id)
VALUES
(null,'0123456789','email01#email.com'), -- very likely id 1
(null,'0987654321','email02#email.com'), -- very likely id 2
(null,'3333333333','email03.#email.com') -- very likely id 3
;
INSERT INTO Skills (Nane)
VALUES
('Skill01'),('Skill02'),('Skill03') -- very likely id's 1,2 and 3
;
INSERT INTO applicant (IdName,idSkill,idContact)
VALUES
-- First applicant
(2, -- Alan Roy
3, -- Skill 3
1), -- Contact 0123456789 )
-- Second Applicant
(3, -- Simon George
3, -- Skill 3
2), -- Contact 0987654321 )
-- Third Applicant
(2, -- Alan Roy again????
1, -- Skill 1
3), -- contact 3333333333)
(1,1,1) -- Fred James/ Skill 1/ Contact 0123456789
--- etc
;
Noting that Rows on the Initiale, Contact and Skills table MUST exists before insertions can be made into the Applicant table.
You could then run a query such as :-
SELECT * FROM applicant
JOIN Initiale ON Initiale.Id = idName
JOIN contact ON contact.Id = idContact
JOIN Skills ON Skills.Id = idSkill
This would result in (using the data as inserted above) :-
I am beginner in sql.I am using sqlplus to run the sql query .I used simple query but it shows an error like "MISSING RIGHT PARENTHESIS".My objective is to create the autoincrement primary key .Can anyone solve the error?Thanks in advance...
create table student(rollno int identity(1,1) primary key,
name varchar(20),marks int);
For Oracle, the rollno column could be defined as NUMBER(0010) and primary key.
Then you would need to add an ON INSERT trigger to populate rollno from a SEQUENCE. There are many samples of triggers and sequences on this site.
In oracle 12 you can use a identity column to automatically fill your ID
CREATE TABLE students
(
"ID" NUMBER GENERATED BY DEFAULT AS IDENTITY MINVALUE 1 MAXVALUE 9999999999
INCREMENT BY 1 START WITH 1 ,
"NAME" VARCHAR2(20),
"MARKS" NUMBER(2,0),
CONSTRAINT PK_STUDENTS PRIMARY KEY (ID) ENABLE
);
/
This creates a table without any triggers needed and automatically fills the id column (of not specified with a value) with the next number up to 99999...
If you're using oracle 11 and below, you need a trigger on insert and assign a value (custom_sequence.nextval) to the id column.
CREATE TABLE students
(
"ID" NUMBER(5,0) not null,
"NAME" VARCHAR2(20),
"MARKS" NUMBER(2,0),
CONSTRAINT PK_STUDENTS PRIMARY KEY (ID) ENABLE
);
/
CREATE SEQUENCE SEQ_STUDENTS INCREMENT BY 1 START WITH 1;
/
TRIGGER TC_students
before insert on students
for each row
begin
if (:new.id is null) then
select SEQ_students.nextval into :new.id from dual;
end if;
end;
/
And please use VARCHAR2.
I would like to do analysis of what codes appear in multiple tables under certains conditions. However I don't think the database schema suits the task very well but maybe there's something I don't know about that can help me. Here's a simplified schema:
CREATE TABLE "batchDescription" (
id INTEGER NOT NULL,
name TEXT NOT NULL UNIQUE,
PRIMARY KEY (id)
);
CREATE TABLE "simulationDetails" (
id INTEGER NOT NULL,
ko_index_id INTEGER NOT NULL,
batch_description_id INTEGER NOT NULL,
data1 REAL NOT NULL,
data2 INTEGER NOT NULL,
PRIMARY KEY (id)
FOREIGN KEY(ko_index_id) REFERENCES "koIndex" (id)
FOREIGN KEY(batch_description_id) REFERENCES "batchDescription" (id)
);
CREATE TABLE "koIndex" (
id INTEGER NOT NULL,
number_of_kos INTEGER NOT NULL,
PRIMARY KEY (id)
);
CREATE TABLE "1kos" (
ko_index_id INTEGER NOT NULL,
ko1 INTEGER NOT NULL,
PRIMARY KEY (ko_index_id)
FOREIGN KEY(ko_index_id) REFERENCES "koIndex" (id)
);
CREATE TABLE "2kos" (
ko_index_id INTEGER NOT NULL,
ko1 INTEGER NOT NULL,
ko2 INTEGER NOT NULL,
PRIMARY KEY (ko_index_id)
FOREIGN KEY(ko_index_id) REFERENCES "koIndex" (id)
);
CREATE TABLE "3kos" (
ko_index_id INTEGER NOT NULL,
ko1 INTEGER NOT NULL,
ko2 INTEGER NOT NULL,
ko3 INTEGER NOT NULL,
PRIMARY KEY (ko_index_id)
FOREIGN KEY(ko_index_id) REFERENCES "koIndex" (id)
);
This goes up to table "525kos" which has ko1 to ko525 in it - ko1 to ko525 are IDs that are primary keys in a table not shown here. I want to do an analysis of how often certain IDs are present under certain conditions. Here is a simple example to illustrate:
I would like to like to count the amount of times a certain ID (let's say 127) (in any koX column) in the "13kos" table occurs when simulationDetails.data1 not equal to 0. I would do this on a database called ko.db from the bash command line like:
for ko_idx in {1..13}; do sqlite3 ko.db "select count(ko${ko_idx}) from '13kos' where ko${ko_idx} = 127 and ko_index_id in (select ko_index_id from simulationDetails where data1 != 0);"; done
Already this is slow and inefficient but is simple compared to what I would like to do. What if I wanted to do an analysis of all the IDs in all possible columns in all "Xkos" tables and compare them to where data1 is equal and not equal to zero?
Can anybody direct me to a better way of doing this or is the schema design just not very good for this kind of analysis and I'll have to give up?
EDIT: Thought I'd add a bit of extra detailto avoid confusion. I suspect that a good way to achieve want I want would be to somehow combine all the "Xkos" tables into one temporary table and then search for certain IDs from that table. How would I combine all 525 ko tables without writing out each table name?
How would I combine all 525 ko tables without writing out each table
name?
Create a table with the same number of columns as the largest table (the table into which you merge) allowing nulls.
query the sqlite_master table using something like :-
SELECT * from sqlite_master WHERE name LIKE '%kos%' AND type = 'table'
Loop through the extracted table names building an INSERT SELECT for each table that will insert the rows from the tables into the table created in 1.
See 2. INSERT INTO table SELECT ...; especially in regard to handling missing columns.
All done, the table created in 1 will be populated accordingly.