Difference between revisions of "CREATE FROM"
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The CREATE FROM command creates a new table, determined by the contents of a table created with the COPY STRUCTURE EXTENDED command. The filenames can be substituted with a <expC1>, enclosed in round brackets, which returns a valid filename. The FROM table consists of five fields, these are: | The CREATE FROM command creates a new table, determined by the contents of a table created with the COPY STRUCTURE EXTENDED command. The filenames can be substituted with a <expC1>, enclosed in round brackets, which returns a valid filename. The FROM table consists of five fields, these are: | ||
| − | {| class="wikitable" width=100% | + | {| class="wikitable" width="100%" |
| − | !Field||Type||Width||width=45%|Description | + | !Field||Type||Width||width="45%"|Description |
|- | |- | ||
|FIELD_NAME||Character||32||Field name | |FIELD_NAME||Character||32||Field name | ||
Latest revision as of 08:57, 5 February 2013
Contents
Purpose
Create a table from the contents of another table
Syntax
CREATE <filename1> | (<expC1>) FROM <filename2> | (<expC2>)
See Also
COPY, COPY STRUCTURE, COPY STRUCTURE EXTENDED
Description
The CREATE FROM command creates a new table, determined by the contents of a table created with the COPY STRUCTURE EXTENDED command. The filenames can be substituted with a <expC1>, enclosed in round brackets, which returns a valid filename. The FROM table consists of five fields, these are:
| Field | Type | Width | Description |
|---|---|---|---|
| FIELD_NAME | Character | 32 | Field name |
| FIELD_TYPE | Character | 1 | Data type of field |
| FIELD_LEN | Numeric | 3 | Width of field |
| FIELD_DEC | Numeric | 3 | Number of decimal places |
| FIELD_DES | Character | 25 | Field Description |
Each record of the FROM table defines a field. The structure of the new table, <filename1>, will be created from these field definitions.
Example
use patrons copy structure extended to patstru close patrons create newpatron from patstru
