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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2015-12-22 21:05:16 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2015-12-22 21:05:29 -0500 |
| commit | 6efbded6e4672c597a6f0dc0f09263e7db7369ff (patch) | |
| tree | 2ee78e250058cdbc4021f24c6ae0bf4e92098c4b /src/backend/utils/adt/ruleutils.c | |
| parent | 0ba3f3bc65f1176250b942e14fd9e4975a5d3913 (diff) | |
| download | postgresql-6efbded6e4672c597a6f0dc0f09263e7db7369ff.tar.gz postgresql-6efbded6e4672c597a6f0dc0f09263e7db7369ff.zip | |
Allow omitting one or both boundaries in an array slice specifier.
Omitted boundaries represent the upper or lower limit of the corresponding
array subscript. This allows simpler specification of many common
use-cases.
(Revised version of commit 9246af6799819847faa33baf441251003acbb8fe)
YUriy Zhuravlev
Diffstat (limited to 'src/backend/utils/adt/ruleutils.c')
| -rw-r--r-- | src/backend/utils/adt/ruleutils.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index 0ab839dc736..280808ae4f9 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -9372,10 +9372,12 @@ printSubscripts(ArrayRef *aref, deparse_context *context) appendStringInfoChar(buf, '['); if (lowlist_item) { + /* If subexpression is NULL, get_rule_expr prints nothing */ get_rule_expr((Node *) lfirst(lowlist_item), context, false); appendStringInfoChar(buf, ':'); lowlist_item = lnext(lowlist_item); } + /* If subexpression is NULL, get_rule_expr prints nothing */ get_rule_expr((Node *) lfirst(uplist_item), context, false); appendStringInfoChar(buf, ']'); } |