Difference between revisions of "SYNCNUM()"
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| − | + | ''Note: The SYNCNUM Pseudo Column has been replaced with the SYNCNUM() function.'' | |
| − | Pseudo | + | |
==Purpose== | ==Purpose== | ||
| − | + | Function to return the unique sequence number assigned to a row from the specified table | |
==Syntax== | ==Syntax== | ||
| − | SYNCNUM | + | SYNCNUM([<workarea | alias>]) |
==See Also== | ==See Also== | ||
| − | [[SQL INSERT|INSERT]], [[Optimizing Indexes using SYNCNUM]], [[SQL Pseudo Columns|PSEUDO COLUMNS]], [[SQL SELECT|SELECT]], [[SQL UPDATE|UPDATE]] | + | [[CURSYNCNUM()]], [[SQL INSERT|INSERT]], [[Optimizing Indexes using SYNCNUM]], [[RECNO()]], [[ROWNUM()]], [[SQL Pseudo Columns|PSEUDO COLUMNS]], [[SQL SELECT|SELECT]], [[SQL UPDATE|UPDATE]] |
==Description== | ==Description== | ||
| − | + | The SYNCNUM() function returns the unique sequence number assigned to a row from the specified table. The SYNCNUM() function operates on the current workarea unless a numeric <workarea> or character <alias> is specified. | |
| − | + | Each new row inserted into a table will be assigned a unique sequence number for that table. Even if the row is deleted later or if all the rows are deleted from the table, that number will not be issued again. | |
| − | + | ||
| − | + | ||
==Example== | ==Example== | ||
<code lang="recital"> | <code lang="recital"> | ||
| − | + | OPEN DATABASE southwind | |
| − | + | SELECT syncnum(), recno() FROM example | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
</code> | </code> | ||
| Line 39: | Line 31: | ||
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:SQL]] | [[Category:SQL]] | ||
| − | [[Category: | + | [[Category:Functions]] |
| + | [[Category:Table Basics]] | ||
| + | [[Category:Table Basics Functions]] | ||
Latest revision as of 11:07, 5 July 2011
Note: The SYNCNUM Pseudo Column has been replaced with the SYNCNUM() function.
Purpose
Function to return the unique sequence number assigned to a row from the specified table
Syntax
SYNCNUM([<workarea | alias>])
See Also
CURSYNCNUM(), INSERT, Optimizing Indexes using SYNCNUM, RECNO(), ROWNUM(), PSEUDO COLUMNS, SELECT, UPDATE
Description
The SYNCNUM() function returns the unique sequence number assigned to a row from the specified table. The SYNCNUM() function operates on the current workarea unless a numeric <workarea> or character <alias> is specified.
Each new row inserted into a table will be assigned a unique sequence number for that table. Even if the row is deleted later or if all the rows are deleted from the table, that number will not be issued again.
Example
OPEN DATABASE southwind SELECT syncnum(), recno() FROM example
Products
Recital, Recital Server
