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Commit923a715

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Fix psql describe commands' handling of ACL columns for old servers.
Commitd1379eb carelessly broke printACLColumn for pre-9.4 servers,by using the cardinality() function which we introduced in 9.4.We expect psql's describe-related commands to work back to 9.2, sothis is bad. Use the longstanding array_length() function instead.Per report from Christoph Berg. Back-patch to v17.Discussion:https://postgr.es/m/ZvLXYglRS6hMMhtr@msg.df7cb.de
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‎src/bin/psql/describe.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6660,7 +6660,7 @@ printACLColumn(PQExpBuffer buf, const char *colname)
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{
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appendPQExpBuffer(buf,
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"CASE"
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" WHEN pg_catalog.cardinality(%s) = 0 THEN '%s'"
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" WHEN pg_catalog.array_length(%s, 1) = 0 THEN '%s'"
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" ELSE pg_catalog.array_to_string(%s, E'\\n')"
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" END AS \"%s\"",
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colname,gettext_noop("(none)"),

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