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SQL.FetchPrior

Fetches previous row from a result set.

Component Version macOS Windows Linux Server iOS SDK
SQL 2.6 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "SQL.FetchPrior"; Command )   More

Parameters

Parameter Description Example
Command The command reference number gained with SQL.NewCommand. $Command

Result

Returns 0, 1 or error message.

Description

Fetches previous row from a result set.

Use SQL.FetchPrior, SQL.FetchFirst, SQL.FetchLast method to fetch rows from the scrollable result set. The scrollable result set option should be set before Command executed (SQLite and InterBase don't support this feature). See server specific notes to discover how SQLAPI++ supports the scrollable result set for cetain DBMS.

To check whether a result set exists use SQL.isResultSet method.
Scrolling only works if enabled, so please call SQL.SetCommandOption function to enable it if needed.
Result is 1 on success or 0 on failure.

Examples

Fetch previous record:

MBS("SQL.FetchPrior"; $Command)

Requests a scrollable record set:

MBS( "SQL.SetCommandOption"; $Command; "Scrollable"; "True" )

See also

This function is free to use.

Created 18th August 2014, last changed 24th April 2016


SQL.FetchPos - SQL.FieldCount