What is the query to create a table from existing table?

Use SQL CREATE TABLE AS statement to create a table from an existing table by copying the existing table’s columns.

Table of Contents Show

What do you want to do?
Understand make table queries
Create a make table query
Create the select query
Convert the select query
Learn more about query criteria and expressions
Stop Disabled mode from blocking a query
How do you create a table from an existing table in SQL?
How can you create a table from an existing table?
How do you create a query from an existing table?
What is the query to create a table?

What happens to the METADATA and DATA when creating a table by copying from existing table?
Metadata like all/selected columns and its datatype (including size) gets copied except constraints excluding NOT NULL constraint.
Means out of all constraints (primary key,foreign key,unique,check and not null) only not null constraint get copied for the column in new table as like the column in existing table.

Data (full/partial/no data) gets copied as mentioned in the where clause of the select statement.

All columns & data in the existing table gets copied to the new table for the below statement.
CREATE TABLE new_table
AS (SELECT * FROM existing_table);

Selected columns & data in the existing table gets copied to the new table for the below statement.
CREATE TABLE new_table
AS (SELECT column_1, column_2, … column_n
FROM existing_table WHERE condition );

Selected columns & data from multiple existing tables gets copied to the new table for the below statement.
CREATE TABLE new_table
AS (SELECT a.column_1, b.column_2, … c.column_n
FROM existing_table_1 a, existing_table_2 b, … existing_table_n c WHERE condition );

And Below statement is used to create table without DATA.
CREATE TABLE new_table
AS (SELECT *
FROM existing_table WHERE 1=2);

The above statement creates a new table by copying all columns and not null constraint from existing table.
SELECT fetches all the data and for each record it applies & checks the condition. Since the condition fails it does not return the data in output.

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Jagadeeswaran Balu

What do you want to do?

Understand make table queries

A make table query retrieves data from one or more tables, and then loads the result set into a new table. That new table can reside in the database that you have open, or you can create it in another database.

Typically, you create make table queries when you need to copy or archive data. For example, suppose you have a table (or tables) of past sales data, and you use that data in reports. The sales figures cannot change because the transactions are at least one day old, and constantly running a query to retrieve the data can take time — especially if you run a complex query against a large data store. Loading the data into a separate table and using that table as a data source can reduce workload and provide a convenient data archive. As you proceed, remember that the data in your new table is strictly a snapshot; it has no relationship or connection to its source table or tables.

The process of creating a make table query follows these broad steps:

Enable the database, if it is not signed or if it does not reside in a trusted location. You cannot run action queries (append, update, and make table queries) otherwise.
In query Design view, create a select query and then modify that query until it returns the records you want. You can select data from more than one table and, in a real sense, you can de-normalize your data. For example, you can place customer, shipper, and supplier data in a single table, something you would not do in a production database with properly normalized tables. You can also use criteria in the query to further customize or narrow your result set.

For more information about normalizing your data, see the article Database design basics.
Convert the select query to a make table query, choose a location for the new table, and then run the query to create the table.

Do not confuse a make table query with an update or append query. You use an update query when you need to add or change data in individual fields. You use an append query when you need to add records (rows) to an existing set of records in an existing table.

Create a make table query

You create a make table query by first creating a select query, and then converting it to a make table query. Your select query can use calculated fields and expressions to help return the data that you need. The following steps explain how to create and convert the query. If you already have a select query that fits your needs, you can skip ahead to the steps for converting the select query and running the make table query.

Create the select query

Note: If you already have a select query that produces the data that you need, go to the next steps.

On the Create tab, in the Queries group, click Query Design.
Double-click the tables from which you want to retrieve data. Each table appears as a window in the upper section of the query designer. Click Close when have finished adding the tables.
In each table, double-click the field or fields that you want to use in your query. Each field appears in a blank cell in the Field row of the design grid. This figure shows the design grid with several table fields added.
Optionally, add any expressions to the Field row.
Optionally, add any criteria to the Criteria row of the design grid.
Click Run
to run the query and display the results in a datasheet.
Optionally, change your fields, expressions, or criteria and rerun the query until it returns the data that you want to place in your new table.

Convert the select query

Open your select query in Design view, or switch to Design view. Access provides several ways to do this:
- If you have the query open in a datasheet, right-click the document tab for your query and click Design View.
- If the query is closed, in the Navigation Pane, right-click the query and click Design View on the shortcut menu.
On the Design tab, in the Query Type group, click Make Table.
The Make Table dialog box appears.
In the Table Name box, enter a name for the new table.
-or-
Click the down-arrow and select an existing table name.
Do one of the following:
- Place the new table in the current database
  1. If it isn't already selected, click Current Database, and then click OK.
  2. Click Run
    , and then click Yes to confirm the operation.
    Note: If you are replacing an existing table, Access first deletes that table and asks you to confirm the deletion. Click Yes, and then click Yes again to create the new table.
- Place the new table in another database
  1. Click Another Database.
  2. In the File Name box, enter the location and file name of the other database.
    -or-
    Click Browse, use the new Make Table dialog box to locate the other database, and click OK.
  3. Click OK to close the first Make Table dialog box.
  4. Click Run
    , and then click Yes to confirm the operation.
    Note: If you replace an existing table, Access first deletes that table and asks you to confirm the deletion. Click Yes, and then click Yes again to create the new table.

Learn more about query criteria and expressions

The steps in this article mentioned query criteria and expressions. A query criterion is a rule that identifies the records that you want to include in a query, and you use criteria when you do not want to see all the records in a given set of data. For example, the criterion >25 AND <50 returns values greater than 25 and less than 50. A criterion such as "Chicago" OR "Paris" OR "Moscow" returns only the records for those cities.

For more information about using criteria, see the article Examples of query criteria.

An expression is a combination of mathematical or logical operators, constants, functions, and names of fields, controls, and properties that evaluates to a single value. You use an expression when you need data that does not reside directly in a table. For example, the expression [UnitPrice]*[Quantity] multiplies the value in the UnitPrice field by the value in the Quantity field. You can use expressions in a wide variety of ways, and the process of creating and using them can become quite complex.

For more information about creating and using expressions, see the article Build an expression.

Stop Disabled mode from blocking a query

By default, if you open a database that isn't saved in a trusted location, or if you haven't chosen to trust the database, Access prevents all action queries — append, update, delete, or make-table queries — from running.

If you try to run an action query and it seems like nothing happens, check the Access status bar for the following message:

How do you create a table from an existing table in SQL?

If you would like to create a new table based on the structure and data from another table, you can use the SELECT INTO clause. First, write a SELECT clause followed by a list of columns (in our example: id , name , and price ) from the existing table (in our example: product ).

How can you create a table from an existing table?

A copy of an existing table can be created using a combination of the CREATE TABLE statement and the SELECT statement. The new table has the same column definitions. All columns or specific columns can be selected.

How do you create a query from an existing table?

Create a make table query.

On the Create tab, in the Queries group, click Query Design..

Double-click the tables from which you want to retrieve data. ... .

In each table, double-click the field or fields that you want to use in your query. ... .

Optionally, add any expressions to the Field row..

What is the query to create a table?

CREATE TABLE table_name( column1 datatype, column2 datatype, column3 datatype, ..... columnN datatype, PRIMARY KEY( one or more columns ) ); CREATE TABLE is the keyword telling the database system what you want to do. In this case, you want to create a new table.