CREATE TABLE Using Another TableA copy of an existing table can also be created using CREATE TABLE.The following SQL creates a new table called "TestTables" (which is a copy of the "Customers" table): Example C
CREATETABLEPersons ( PersonID int, LastName varchar(255), FirstName varchar(255), Address varchar(255), City varchar(255) ); CREATE TABLE Using Another Table The following SQL creates a new table called "TestTables" (which is a copy of two columns of the "Customers" table): ...
Here, the SQL command checks if a table namedCompaniesexists, and if not, it creates a table with specified columns. Create Table Using Another Existing Table In SQL, we can create a new table by duplicating an existing table's structure. Let's look at an example. -- create a backup t...
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...
-- Creates a Delta table > CREATE TABLE student (id INT, name STRING, age INT); -- Use data from another table > CREATE TABLE student_copy AS SELECT * FROM student; -- Creates a CSV table from an external directory > CREATE TABLE student USING CSV LOCATION '/path/to/csv_fil...
Simple CREATE TABLE syntax (common if not using options): syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> } [ ,... n ] ) [ ; ] Full syntax Disk-based CREATE TABLE syntax: syntaxsql Copy CREATE...
USING <table_source> 指定根据<merge_search_condition>与 target_table中的数据行进行匹配的数据源。 此匹配的结果指出了要由 MERGE 语句的 WHEN 子句采取的操作。<table_source>可以是一个远程表,或者是一个能够访问远程表的派生表。 <table_source>可以是一个派生表,它使用 Transact-SQL表值构造函数通过指定多...
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Bulk load operations using SQL Server or SQL Database usingBULK INSERTorOPENROWSET See alsoCREATE EXTERNAL DATA SOURCEandDROP EXTERNAL TABLE. Syntax syntaxsqlCopy -- Create a new external tableCREATEEXTERNALTABLE{database_name.schema_name.table_name|schema_name.table_name|table_name} (<column_defin...
As with ON and TEXTIMAGE_ON, the value set by using CREATE TABLE for FILESTREAM_ON cannot be changed, except in the following cases: A CLR user-defined type. CLR user-defined types are created with the CREATE TYPE statement before they can be used in a table definition. To create a col...