You can create one table from another by adding a SELECT statement at the end of the CREATE TABLE statement: CREATE TABLE new_tbl [AS] SELECT * FROM orig_tbl; MySQL creates new columns for all elements in the SELECT. For example: ...
MySQL CREATE TABLE when not EXISTS The keywords IF NOT EXISTS is used to prevent an error from occurring if the table exists. The keywords IF NOT EXISTS will not verify whether the existing table is of the same structure indicated by the CREATE TABLE statement. The following statement creates ...
to create an empty table based on the definition of another table, including any column attributes and indexes defined in the original table: CREATE TABLE new_tbl LIKE orig_tbl; The copy is created using the same version of the table storage format as the original table. The SELECT privileg...
那么(显然)这样做会更快在MySQL数据库中，关于表的克隆有多种方式，比如我们可以使用create table ..as...
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 CREATE TABLE TestTable ASSELECT customername, contactnameFROM customers; ...
to create a table based on a table definition in another table. In MySQL 4.1 中,你同样也可以为一个被生成的列指定类型: 124 125 CREATE TABLE foo (a tinyint not null) SELECT b+1 AS 'a' FROM bar; 126 127 第张表 tbl_name 由数据库目录下的一些文件表示。对于 MyISAM 类型的表,你将得到...
For more information, see Section 13.1.18.3, “CREATE TABLE ... LIKE Statement”. [AS] query_expression To create one table from another, add a SELECT statement at the end of the CREATE TABLE statement: CREATE TABLE new_tbl AS SELECT * FROM orig_tbl; For more information, see Sec...
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Error Code : 1066 Not unique table/alias: 'TEST_TABLE' All the other statements execute with no error. */ CREATE TEMPORARY TABLE ANOTHER_TABLE LIKE TEST_TABLE; CREATE TEMPORARY TABLE TEST_TABLE SELECT * FROM TEST_TABLE; I hope it's not my fault!
I’m a complete newbie so bear with me. I know how to create table ValData using data from another table… SELECT QID, lockflag, UA_code INTO ValData FROM AdultSurvey; But I want to include a temporary field called fldNo in table ValData which would always have a contant value such ...