From bea282a94e7068c4efb9e4d4fc5e7c687bf1f086 Mon Sep 17 00:00:00 2001 From: Mel Kiyama Date: Mon, 30 Sep 2019 11:40:38 -0700 Subject: [PATCH] docs - add string_agg function as a migration issue (#8722) --- gpdb-doc/dita/install_guide/migrate.xml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/gpdb-doc/dita/install_guide/migrate.xml b/gpdb-doc/dita/install_guide/migrate.xml index 5a34780d23..77d7309ecd 100644 --- a/gpdb-doc/dita/install_guide/migrate.xml +++ b/gpdb-doc/dita/install_guide/migrate.xml @@ -137,6 +137,11 @@ aggregate in a previous Greenplum release that called the built-in int4_avg_accum() function, you will need to revise your aggregate for the new signature. +
  • The string_agg(expression) function has been removed from Greenplum 6. + The function concatenates text values into a string. You can replace the single argument + function with the function string_agg(expression, delimiter) and specify + an empty string as the delimiter, for example + string_agg(txt_col1, '').
  • gpbackup saves the distribution policy and distribution key for each table in the backup so that data can be restored to the same segment. If a table's distribution key in the Greenplum 4.3 or 5 database is incompatible with Greenplum 6, -- GitLab