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Is it important for any of the reasons if I create column A before column B in SQL Server database? No other actions are presumed in between.
See this:
Your Table Structure:
create table test (id int, name varchar(100));
Table of your customer:
create table test (name varchar(100), id int);
If you use:
insert into test values (10, 'Roger')
without specifying the order of fields in the table will cause your customer conversion error.
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I am trying to write some SQL code. I have a table and I want to add values to that table Tasks, but I am getting an error
Invalid Column Name "Manager"
over Task_Name. I identified Id as auto-incrementing with IDENTITY(1,1) and I have a BIT type value as default 0.
How should I write the expression of insert into?
Here is the code for creating:
CREATE TABLE Tasks
(
ID INTEGER IDENTITY(1,1) NOT NULL PRIMARY KEY,
Task_Name VARCHAR(100),
Situation BIT DEFAULT 0
);
Here is the code for Insert Into:
INSERT INTO (ID, Task_Name, Situation)
VALUES (1, "Manager");
INSERT INTO Tasks (Task_Name) values ('Manager')
Don’t specify ID unless turning identity_insert on (column is marked as identity column)
Don’t include column names to insert default values
Use ' to quote strings
INSERT INTO Tasks (Task_Name, Situation) VALUES ('Task_NameValue', 1);
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Good day what is the best data type to use for numbers in SQL Server
Test Your Data Types here
https://www.tutorialspoint.com/execute_sql_online.php
Run the Below t-sql for more your data types as below
BEGIN TRANSACTION;
/* Create a table called NAMES */
CREATE TABLE [Customer]
(
[CustomerKey] [int] IDENTITY(1,1) NOT NULL,
[Test_Number] [varchar](50) NULL
);
insert into Customer values (1,"25/08/2018");
insert into Customer values (2,15:06:59);
insert into Customer values (3,25.01);
insert into Customer values (4,"GL45R-2");
select * from Customer
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How to start table primary key and identity Id from 1 without using
table truncate in Sql-Server.
There is a console command that will do this
https://learn.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-checkident-transact-sql
DBCC CHECKIDENT
DBCC CHECKIDENT ('table', RESEED, 1);
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A patient can select many tests, and a test can be selected by many patient.
Then what would be the structure of these tables and how the relationship can be established between them?
your table structure should be below
PatientTable
PatientId int Primary Key,
PatientName varchar(50),
EmailId varchar(50)
Password varchar(50)
TestTable
TestId int Primary key,
TestName varchar(50)
PatientTestTable
PatientId int FK(PatientTable)
TestId int FK (TestTable)
This way you can give relationship to two tables. you need to understand funamental of RDBMS.
You will probably need 3 tables, Patient table, Test Table and PatientTest Table
with PatientID as foreign key fro Patient table and TestId as foreign key from Test table and you can add any other column ( like TestDatetime, TestResult ...)
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I need help writing some basic Cursor
I want creating a table with 4/5 columns and insert into the table 1 Mil rows
I am not sure how to write the Cursor that's where I need my help with :/
The task you mention can be done by creating the table and using a simple t-sql procedure to insert the rows, like so -
DDL for create table -
CREATE TABLE Persons
(
PersonID int,
LastName varchar(255),
FirstName varchar(255),
Address varchar(255),
City varchar(255)
);
t-sql to populate table -
DECLARE #cnt INT = 0;
WHILE #cnt < 1000000
insert into persons values(#cnt,'smith','gever','madison','barcelona');
SET #cnt = #cnt + 1;
end;
Was this what you meant? Cause it ain't a cursor.