Upsert UPDATE Syntax | SQL Statements | Teradata Vantage - UPDATE Syntax (Upsert Form) - Analytics Database - Teradata Vantage

{ UPDATE | UPD }
  [ with_isolated_loading ]
  table_name_1
  [ [AS] correlation_name ]
  SET set_spec [,...]
  WHERE condition ELSE { INSERT | INS } [INTO] table_name_2
  { [ VALUES ] ( expression [,...] ) |
    ( column_name [,...] ) [ VALUES ] ( expression [,...] ) |
    DEFAULT VALUES
  } [;]

Syntax Elements

with_isolated_loading

WITH [NO] [CONCURRENT] ISOLATED LOADING

table_name_1

Name of the table or queue table in which the row set is to be updated, or the name of the view through which the base table is accessed. The table must have a primary index and can be row-partitioned but cannot be column partitioned.

This must match the specification for table_name_2.

correlation_name

An alias for table_name_1.

set_spec

column_name [.mutator_method_name] = expression

condition

The predicate that specifies the row to be updated:

• If the UPDATE target is a SET table with a UPI, then only one row can be updated per request.
• If the UPDATE target is a SET table with a NUPI or a MULTISET table, then multiple rows can be updated per request.

table_name_2

Name of the table or queue table in which the row set is to be inserted, or the name of the view through which the base table is accessed.

This name must match the name specified for table_name_1.

expression

The non-default set of values to be inserted into table_name_2.

You must specify values or nulls for each column defined for the table named table_name_2 or the insert fails.

column_name

Column set into which the values specified by expression are to be inserted.

DEFAULT VALUES

A row consisting of default values is to be added to table_name.

If any column does not have a defined DEFAULT phrase, then the process inserts a null for that column.

WITH [NO] ISOLATED LOADING

Without NO, the UPDATE can be performed as a concurrent load isolated operation.

With NO, the UPDATE is not performed as a concurrent load isolated operation.

CONCURRENT

Optional keyword that you can include for readability.

column_name = expression

Value expression to be updated in column column_name. This can be a DEFAULT function.

Host variables in the SET clause must always be preceded by a COLON character.

You cannot specify a derived period column name.

mutator_method_name

Name of a mutator method that is to perform some update operation on column_name.

See Updating Structured UDTs Using a Mutator SET Clause.