Stabilize stats_ext test with other collations

The tests used string concatenation to test statistics on expressions, but that made the tests locale-dependent, e.g. because the ordering of '11' and '1X' depends on the collation. This affected both the estimated and actual row couts, breaking some of the tests. Fixed by replacing the string concatenation with upper() function call, so that the text values contain only digits. Discussion: https://postgr.es/m/b650920b-2767-fbc3-c87a-cb8b5d693cbf%40enterprisedb.com

Stabilize stats_ext test with other collations
The tests used string concatenation to test statistics on expressions, but that made the tests locale-dependent, e.g. because the ordering of '11' and '1X' depends on the collation. This affected both the estimated and actual row couts, breaking some of the tests. Fixed by replacing the string concatenation with upper() function call, so that the text values contain only digits. Discussion: https://postgr.es/m/b650920b-2767-fbc3-c87a-cb8b5d693cbf%40enterprisedb.com
2a058e93 · Tomas Vondra · 8df2f371 · 2a058e93 · 2a058e93
Commit 2a058e93 authored Mar 27, 2021 by Tomas Vondra
Showing with 153 additions and 153 deletions

src/test/regress/expected/stats_ext.out src/test/regress/expected/stats_ext.out +102 -102

src/test/regress/sql/stats_ext.sql src/test/regress/sql/stats_ext.sql +51 -51

No files found.
--- a/src/test/regress/expected/stats_ext.out
+++ b/src/test/regress/expected/stats_ext.out
--- a/src/test/regress/sql/stats_ext.sql
+++ b/src/test/regress/sql/stats_ext.sql