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POSTGRESQL INSERT INTO SELECT HOW TO
POSTGRESQL INSERT INTO SELECT SERIAL
POSTGRESQL INSERT INTO SELECT FULL

To check the structure of the film_rating table, you use the following command in psql tool: \d film_rating Code language: SQL (Structured Query Language) ( sql ) It explicitly specified the column names for the new table instead of using the column names from the SELECT clause. This example statement created a new table film_rating and filled it with the summary data from the film table. If the SELECT clause contains expressions, it is a good practice to override the columns, for example: CREATE TABLE IF NOT EXISTS film_rating (rating, film_count) To check the structure of the action_film, you can use the following command in the psql tool: \d action_film Code language: SQL (Structured Query Language) ( sql )Īs clearly shown in the output, the names and data types of the action_film table are derived from the columns of the SELECT clause. To verify the table creation, you can query data from the action_film table: SELECT * FROM action_film CREATE TABLE action_film AS SELECTĬode language: SQL (Structured Query Language) ( sql ) The following statement creates a table that contains action films that belong to category one. We will use the film and film_category table from the sample database for the demonstration. In case you want to avoid an error by creating a new table that already exists, you can use the IF NOT EXISTS option as follows: CREATE TABLE IF NOT EXISTS new_table_nameĪS query Code language: SQL (Structured Query Language) ( sql ) PostgreSQL CREATE TABLE AS statement examples

If you want the table columns to have different names, you can specify the new table columns after the new table name: CREATE TABLE new_table_name ( column_name_list) The columns of the new table will have the names and data types associated with the output columns of the SELECT clause. The UNLOGGED keyword allows the new table to be created as an unlogged table: CREATE UNLOGGED TABLE new_table_name The TEMPORARY or TEMP keyword allows you to to create a temporary table: CREATE TEMP TABLE new_table_name

Second, provide a query whose result set is added to the new table after the AS keyword.

First, specify the new table name after the CREATE TABLE clause.

The following shows the syntax of the CREATE TABLE AS statement: CREATE TABLE new_table_nameĪS query Code language: SQL (Structured Query Language) ( sql ) The CREATE TABLE AS statement creates a new table and fills it with the data returned by a query. Introduction to the PostgreSQL CREATE TABLE statement

POSTGRESQL INSERT INTO SELECT HOW TO

The table has many fields, so I don't want to write them all, as this will affect code readability.Summary: in this tutorial, you will learn how to use the PostgreSQL CREATE TABLE AS statement to create a new table from the result set of a query.

POSTGRESQL INSERT INTO SELECT FULL

Is there any concise syntax allowing inserting and changing single field without full table specification aka FROM tab(col1, col2, col3. It throws error ERROR: duplicate key value violates unique constraint "tab_entry_pkey"ĭefault sequence doesn't generate next value by default. So the problem is: when I try copy record in a simplified manner: insert into tab_entry select * from tab_entry where id = 3052 \d tab returns just this Column | Type | Modifiers

POSTGRESQL INSERT INTO SELECT SERIAL

My table has default-generated sequence entry_id_seq, however I am not sure id column is SERIAL (how to check that?).

I need to copy records within the same table changing only one field.