![]() ![]() This example would create a new table called current_inventory based on column definitions from both the products and categories tables.Īgain, only the records that met the conditions of the SELECT statement would be populated into the new current_inventory table. ON products.category_id = categories.category_id SELECT products.product_id, products.product_name, categories.category_name It returns the following output: As clearly shown in the output, the names and data types of the actionfilm table are derived from the columns of the SELECT clause. Next, let's look at a CREATE TABLE AS example that shows how to create a table by copying selected columns from multiple tables.įor example: CREATE TABLE current_inventory AS If the destination table does not exist, you can create it first with a CREATE TABLE statement, and then copy rows into it with INSERT. In other words, all records from the products table with a quantity greater than 0 would be inserted into the current_inventory table when it was created. If there were records in the products table, then the new current_inventory table would be populated with the records returned by the SELECT statement. Syntax of creating table in PostgreSQL CREATE TABLE tablename( column1 datatype, column2 datatype, column3 datatype. ) LOCALSORT BY ( ) AS . This example would create a new table called current_inventory that included all columns from the products table. In PostgreSQL, we can list the tables in two ways: using the psql meta-commands of simple SELECT clause query on the table pgtables of pgcatalog schema. CREATE TABLE IF NOT EXISTS PARTITION BY ( , .Let's look at a PostgreSQL CREATE TABLE AS example that shows how to create a table by copying all columns from another table.
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