Difference between revisions of "CURRSEQNO()"
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==Purpose== | ==Purpose== | ||
Function to return the current 'SEQNO' value | Function to return the current 'SEQNO' value | ||
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==Syntax== | ==Syntax== | ||
CURRSEQNO([<workarea | alias>]) | CURRSEQNO([<workarea | alias>]) | ||
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==See Also== | ==See Also== | ||
[[LASTSEQNO()]], [[SEQNO()]], [[SET SEQNO]], [[ZAP]] | [[LASTSEQNO()]], [[SEQNO()]], [[SET SEQNO]], [[ZAP]] | ||
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==Description== | ==Description== | ||
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A ZAP operation will reset the sequence number to 0. The sequence number of a table can be reset with the command SET SEQNO TO <expN>. | A ZAP operation will reset the sequence number to 0. The sequence number of a table can be reset with the command SET SEQNO TO <expN>. | ||
| − | The SET SEQNO command and CURRSEQNO() and SEQNO() functions are only supported for | + | The SET SEQNO command and CURRSEQNO() and SEQNO() functions are only supported for Lianja tables. |
The CURRSEQNO() function is synonymous with the LASTSEQNO() function. | The CURRSEQNO() function is synonymous with the LASTSEQNO() function. | ||
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==Example== | ==Example== | ||
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1 | 1 | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
| − | + | Lianja Server, Lianja | |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
| + | [[Category:Lianja VFP Extensions]] | ||
| + | [[Category:VFP Function Extensions]] | ||
Latest revision as of 11:39, 11 December 2012
Purpose
Function to return the current 'SEQNO' value
Syntax
CURRSEQNO([<workarea | alias>])
See Also
LASTSEQNO(), SEQNO(), SET SEQNO, ZAP
Description
The CURRSEQNO() function returns the current 'SEQNO' value. The SEQNO value is a unique sequence number generated on a per table basis. The CURRSEQNO() function differs from the SEQNO() function in that CURRSEQNO() returns the current sequence number for a table and SEQNO() increases the current sequence number by one and then returns the value. Including the optional <workarea | alias> parameter will cause the CURRSEQNO() function to operate on the specified table. If there is no active table the CURRSEQNO() function will return 0.
A ZAP operation will reset the sequence number to 0. The sequence number of a table can be reset with the command SET SEQNO TO <expN>.
The SET SEQNO command and CURRSEQNO() and SEQNO() functions are only supported for Lianja tables.
The CURRSEQNO() function is synonymous with the LASTSEQNO() function.
Example
use newtable ? seqno() 1 ? seqno() 2 ? currseqno() 2 ? currseqno() 2 set seqno to 0 ? currseqno() 0 ? seqno() 1
Products
Lianja Server, Lianja
