SQL: CREATE a table from another table You can also create a table from an existing table by copying the existing table's columns. It is important to note that when creating a table in this way, the new table will be populated with the records from the existing table (based on the SEL...
We can UPDATE a table with data from any other table in SQL. Let us consider the following two tables. CREATE TABLE student_old ( student_id INT ,
-- create a table named Companies with different columnsCREATETABLECompanies (idint,namevarchar(50), addresstext, emailvarchar(50), phonevarchar(10) ); Here, the SQL command creates a database namedCompanieswith the columns:id,name,address,emailandphone. SQL CREATE TABLE Syntax CREATETABLEtable_...
--Use hive format CREATE TABLE student (id INT, name STRING, age INT) STORED AS ORC; --Use data from another table CREATE TABLE student_copy STORED AS ORC AS SELECT * FROM student; --Specify table comment and properties CREATE TABLE student (id INT, name STRING, age INT) ...
DELETE data from a table by joining with another table in SQL Let us consider the below tables. CREATETABLEorders(order_idINTPRIMARYKEY,customer_nameVARCHAR(100),order_dateDATETIME,total_ordersINT);INSERTINTOordersSELECT1,'Jack','2020-02-03',4UNIONALLSELECT2,'Rose','2020-01-09',19;CREAT...
with columns named LNO NUMERIC (3), EMPNO NUMERIC (4), TYPE CHAR(1), AMNT NUMERIC (8,2) *Don’t forget to create constraints 语句: create table loans (LNO NUMERIC(3),EMPNO NUMERIC(4),TYPE CHAR(1),AMNT NUMERIC(8,2)); alter table loans add primary key (lno); 结果(图2-7-1...
Tip:The empty "Persons" table can now be filled with data with the SQLINSERT INTOstatement. Create Table Using Another Table A copy of an existing table can also be created usingCREATE TABLE. The new table gets the same column definitions. All columns or specific columns can be selected. ...
CREATEtable_name(column_name data_type,...CONSTRAINTfk_tbl1_tbl2FOREIGNKEY(this_tables_column)REFERENCESother_table_name(other_column_name)); You need to start with the word CONSTRAINT, then the name of the foreign key. The name needs to be unique across the database, so I like to start...
By default, the new table would be filled with the existing values from the old table if an existing table was used to construct it. Syntax To Create Table SQL Using Another Table CREATE TABLE new_table_name AS SELECT column1, column2,… ...
The following example creates a table with data retention enabled and a retention period of one week. This example applies to Azure SQL Edge only. SQL Copy CREATE TABLE [dbo].[data_retention_table] ( [dbdatetime2] DATETIME2 (7), [product_code] INT, [value] CHAR (10) ) WITH (DATA...