[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'SQLDB' (#fcl)

# TSQLQuery.UpdateSQL

Statement to be used when updating an existing row in the database

## Declaration

Source position: sqldb.pp line 699

`published property TSQLQuery.UpdateSQL : TStringList;`

## Description

UpdateSQL can be used to specify an SQL UPDATE statement, which is used when an existing record was modified in the dataset, and the changes must be written to the database. TSQLQuery can generate an update statement by itself for many cases, but in case it fails, the statement to be used for the update can be specified here.

The SQL statement should be parameterized according to the conventions for specifying parameters. Note that old field values can be specified as :OLD_FIELDNAME

## See also

TSQLQuery.SQL |  | The SQL statement to execute
TSQLQuery.InsertSQL |  | Statement to be used when inserting a new row in the database
TSQLQuery.DeleteSQL |  | Statement to be used when deleting a new row in the database
TSQLQuery.UpdateMode |  | How to create update SQL statements.
UsingParams |  | Using parameters
UpdateSQLS |  | Automatic generation of update SQL statements

Documentation generated on: May 14 2021