4D v18

4d_language_reference

Home

4D - SQL Reference
- Syntax rules
- - Syntax rules
  - 4d_function_call
  - 4d_language_reference
  - all_or_any_predicate
  - arithmetic_expression
  - between_predicate
  - case_expression
  - column_definition
  - column_reference
  - command_parameter
  - comparison_predicate
  - exists_predicate
  - foreign_key_definition
  - function_call
  - in_predicate
  - is_null_predicate
  - like_predicate
  - literal
  - predicate
  - primary_key_definition
  - search_condition
  - select_item
  - sort_list
  - sql_data_type_name
  - sql_name
  - sql_string
  - subquery
  - table_constraint
  - table_reference

Home

4D v18

4D - SQL Reference

Syntax rules

4d_language_reference



	Command 4d_language_referen<<sql_name>> \|<<$sql_name>> \| <<[sql_name]sql_name>> \| :sql_name\|:$sql_name\|:sql_name.sql_name

Description

A 4d_language_reference argument specifies the 4D variable or field name (sql_name) to which data will be assigned. This name can be passed in one of the following manners:

<<sql_name>>
<<$sql_name>> (*)
<<[sql_name]sql_name>> (corresponds to the standard 4D syntax: [TableName]FieldName)
:sql_name
:$sql_name (*)
:sql_name.sql_name (corresponds to the standard SQL syntax: TableName.FieldName)

(*) In compiled mode, you cannot use references to local variables (beginning with the $ symbol).

Siehe auch

Accessing the 4D SQL Engine
SELECT
sql_name