When UNION is used, the syntax check is performed in a When UNION is used, Open SQL bypasses table buffering. Priorities using parentheses are particularly applicable when handling duplicate rows using DISTINCT. The additions UP TO and OFFSET are not currently allowed with UNION.(meaning a SELECT statement without the addition INTO |APPENDING. If an assignment is made to a non-table-like target are The union result set is always multirow.The column names of all results sets defined in the query_clauses from left to right must match. If the addition CORRESPONDING or an inline declaration used in the INTO clause,.The names must be specified directly and cannot be specified with the ORDER BY must occur with the same name in all relevant SELECT statements. Columns of the union results set specified after.The addition ORDER BY PRIMARY KEY is not allowed.The following special features apply here: INTO clause is to be listed as the last clause and before the additions abap_options. In the case of standalone statements, the Specific statements can be prioritized using parentheses.Īfter the last query or after the position of the last closing bracket are listed and affect the union The queries joined with UNION are evaluated from left to right. A pair of parentheses can include multiple unions. A query on the right side of UNION can be enclosed in parentheses ( In all syntax forms, it is possible to specify the sameĬlauses and additions query_clauses for SELECT statements of queriesīefore and after UNION for defining result sets. Query of a standalone statement, which is introduced using WITH or SELECT.įor creating the results set of a parenthesized subquery in an The syntax forms show where UNION can be used: Set of the query after UNION are inserted into the result set of the query before UNION. The Open SQL language element UNION joins the result sets of two SAP NetWeaver AS ABAP Release 752, ©Copyright 2017 SAP AG.
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