How do I select a value from a variable in SQL?

How do I select a value from a variable in SQL?

SELECT @local_variable is typically used to return a single value into the variable. However, when expression is the name of a column, it can return multiple values. If the SELECT statement returns more than one value, the variable is assigned the last value that is returned.

How do I select a specific in SQL?

SQL Server SELECT

1. First, specify a list of comma-separated columns from which you want to query data in the SELECT clause.
2. Second, specify the source table and its schema name on the FROM clause.

How do I select a specific row value in SQL?

To select rows using selection symbols for character or graphic data, use the LIKE keyword in a WHERE clause, and the underscore and percent sign as selection symbols. You can create multiple row conditions, and use the AND, OR, or IN keywords to connect the conditions.

How do I select a range of values in SQL?

Summary: in this tutorial, you will learn how to use SQL BETWEEN operator to select data within a range of values. The BETWEEN operator is used in the WHERE clause to select a value within a range of values. We often use the BETWEEN operator in the WHERE clause of the SELECT, UPDATE and DELETE statements.

How do you assign a value to a variable in SELECT query?

To assign a value to a variable, use the SET statement. This is the preferred method of assigning a value to a variable. A variable can also have a value assigned by being referenced in the select list of a SELECT statement.

How do I store a list of values in SQL Server?

In the design all users data will be stored in a series of columns in a single table but one of the columns requires to store a list of values, for example: 'column1' will store the username , 'column2' will store the userID and 'column3' will store a list of items that will change over time.

How do you write a SELECT query?

Use the Query Wizard

1. On the Create tab, in the Queries group, click Query Wizard.
2. In the New Query dialog box, click Simple Query Wizard, and then click OK.
3. Next, you add fields. ...
4. If you did not add any number fields (fields that contain numeric data), skip ahead to step 9.

How do I SELECT a last name in SQL?

Use the box below and click on Run Query to try it.

1. SELECT FirstName, LastName FROM Person.Person. SELECT FirstName, LastName FROM Person.Person. xxxxxxxxxx. ...
2. SELECT FirstName, LastName FROM Person.Person; SELECT FirstName, LastName FROM Person.Person; xxxxxxxxxx. ...
3. SELECT * FROM Person.Person; /* Answer */ xxxxxxxxxx.

How do I get all rows in SQL?

SELECT column1, column2 FROM table1, table2 WHERE column2='value'; In the above SQL statement: The SELECT clause specifies one or more columns to be retrieved; to specify multiple columns, use a comma and a space between column names. To retrieve all columns, use the wild card * (an asterisk).

What is the use of SELECT query?

SELECT query is used to retrieve data from a table. It is the most used SQL query. We can retrieve complete table data, or partial by specifying conditions using the WHERE clause.

How to add static value to results of SQL query?

• What I want to do is construct a query such that what gets returned is the results of this query: and adds a row before the first row of the above query that has " -1, 'ALL THINGs' " as the values. So if the table has the following three entries: Then the result that I want looks like this:

How to add static value while insert into with select in a MySQL Query?

• The query to create a table is as follows − Now you can insert some records in the table using insert command. The query is as follows − Display all the records from the table using select statement. The query is as follows − Let us create second table. The query to create a table is as follows −

Is there a way to select from a static list in SQL?

• I wish there were a standard way to accomplish that, but I am unaware of any. Most SQL implementations provide methods to add lots of data to a table without having to use a separate SQL statement for every row, but I don't know of any single method that will work on all of them. Please Sign up or sign in to vote.

How to add a static value to a table?

• I don't have the hooks to go in to add the static value. I also know that I could just put a record in the table for " -1, 'ALL THINGS' " but the problem is, if I do that, I will need to change a lot of places in the program to ignore that record when doing processing.