Creating Tables
You must create your tables before you can enter data into them. Use the Create Table command.
Syntax:
Create table tablename using filename
(fieldname fieldtype(length),
fieldname fieldtype(length),
fieldname fieldtype(length));
Explanation:
- Table names cannot exceed 20 characters.
- Table names must be unique within a database.
- Field names must be unique within a table.
- You may specify the data file to use. If you do not specify a data file, Scalable SQL will create one, using a .dat extension.
- The list of fields must be enclosed in parentheses.
- You must specify the field type.
Examples:
Char -- a character string
Float -- a number
Date -- a date field
Logical -- a logical field
- You must specify the field length.
- The field length must be enclosed in parentheses.
- You must separate field definitions with commas.
- You must end each SQL statement with a semicolon.
Example:
Create tables TrnVendor and TrnAPDoc. We will use these tables in the exercises that follow:
- In the SQL text box, type:
Create table TrnVendor using 'TVendor.dat'
(VendId char(10),
Name char(30),
Add1 char(30),
City char(30),
State char(3),
CurrBal float(8),
ExpAcct char(10));
Create table TrnAPDoc using 'TAPDoc.dat'
( VendId char(10),
RefNbr char(10),
DocDate date(4),
OrigDocAmt float(8),
CuryDocBal float(8),
OpenDoc logical(2));
- Execute the commands. To create the first table, click on First, the Run button located to the right of the SQL text box.
- You should receive the following message:
Scalable SQL informative status = -105. The CREATE statement completed successfully.
- Click on Next to create the second table.
- You should receive the following message:
Scalable SQL informative status = -105. The CREATE statement completed successfully.
Click on Stop to return to the original screen.
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