|
 This
newly created table is only accessible to the Omnidex process
in which it was created. If the table is not dropped before
this process terminates, the table will remain in place in
the database and can only be removed using the appropriate
DBMS tools.
To make a table created with the CREATE TABLE command available
in the future to other Omnidex processes, add the table definition
for the new table to the environment source file, recompile
it and reinstall the indexes. Indexes can also be installed
on the new table after it has been permanently added to the
environment catalog.
The CREATE TABLE command should be followed by one or more
INSERT INTO commands to populate the new table with data.
The combination of a CREATE TABLE command followed by an
INSERT INTO command is similar to a SELECT INTO command. However,
a SELECT INTO command creates a new table and therefore cannot
add data to an existing table.
A DROP TABLE command can be used to drop a table created
with either a CREATE TABLE command or a SELECT INTO command.
Syntax
CREATE [GLOBAL TEMPORARY | LOCAL TEMPORARY] TABLE
table [PHYSICAL physical] (column [,column...])
CREATE
Required
[GLOBAL TEMPORARY | LOCAL TEMPORARY]
Optional. Specify if the table is a global temporary table
or a local temporary table. Temporary tables are automatically
dropped by the DBMS when the current user session ends. GLOBAL
means the table is accessible to all active user sessions
and LOCAL means the table is accessible only the the user
session in which it was created.
TABLE table
Required. table is the name of the table to be created as
it will be referred to in subsequent queries.
physical
Optional. The physical file name to be created. If omitted,
the file will be created in the same location as the environment
catalog and will be named according to the table parameter.
column
Required. One or more column specifications, comma separated.
column-name datatype (length)
top
OdxSQL Example
This example creates an empty table named CUSTS using a CREATE
TABLE command, inserts some rows into the table, runs a select
statement against that table and then drops the table.
>CREATE TABLE CUSTS (CUSTOMER CHAR LENGTH 40)
Table CUSTS created
>
Insert a row using the INSERT INTO command.
>INSERT INTO CUSTS VALUES ('JANE SMITH')
1 row inserted into CUSTS
>
>INSERT INTO CUSTS VALUES ('JOHN SIMPSON')
1 row inserted into CUSTS
>
Select rows from the new table using the SELECT command.
>SELECT * FROM CUSTS
CUSTOMER
----------------------------------------
JANE SMITH
JOHN SIMPSON
Note that because the new table is not indexed, selects are
preformed by serial read.
Drop the table using the DROP TABLE command.
>DROP TABLE CUSTS
Table CUSTS dropped
>
top
|
