NexusDB V3 Manual
LastAutoinc Function
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NexusDB Manual V3 > SQL Reference > SQL Functions > Numeric Value Functions
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Syntax
<lastautoinc function> ::=
Notes
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The LASTAUTOINC function returns the most recent AutoInc value generated by the current SQL session.
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The data type of the result is DWORD.
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If no AutoInc value has been generated during the current SQL session, then the result is null.
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The LASTAUTOINC function should always be executed inside a transaction when the result is used for assignments.
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The IDENTITY keyword, which is a synonym for the LASTAUTOINC function, is deprecated in V2 and may be deleted in a future version of NexusDB SQL.
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Examples
1)
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Assuming master.masterID is an AUTOINC column, the following example first inserts a new row into master, which causes the AUTOINC column to be incremented, and then inserts a new row into the detail table using the LASTAUTOINC function to assign the last generated AutoInc value to the detail.masterID column:
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START TRANSACTION;
INSERT INTO master ( masterID ) VALUES ( 100 );
INSERT INTO detail ( masterID, detailID ) VALUES ( LASTAUTOINC, 1 );
COMMIT;
Conformance
NexusDB extensions
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LASTAUTOINC function
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© Nexus Database Systems Pty Ltd.
