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-rw-r--r--src/backend/parser/analyze.c65
-rw-r--r--src/backend/utils/adt/ruleutils.c60
-rw-r--r--src/include/catalog/catversion.h2
-rw-r--r--src/test/regress/expected/insert.out79
-rw-r--r--src/test/regress/sql/insert.sql48
5 files changed, 205 insertions, 49 deletions
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c
index 29c8c4e94c7..eac86cce3ee 100644
--- a/src/backend/parser/analyze.c
+++ b/src/backend/parser/analyze.c
@@ -51,7 +51,8 @@ post_parse_analyze_hook_type post_parse_analyze_hook = NULL;
static Query *transformDeleteStmt(ParseState *pstate, DeleteStmt *stmt);
static Query *transformInsertStmt(ParseState *pstate, InsertStmt *stmt);
static List *transformInsertRow(ParseState *pstate, List *exprlist,
- List *stmtcols, List *icolumns, List *attrnos);
+ List *stmtcols, List *icolumns, List *attrnos,
+ bool strip_indirection);
static OnConflictExpr *transformOnConflictClause(ParseState *pstate,
OnConflictClause *onConflictClause);
static int count_rowexpr_columns(ParseState *pstate, Node *expr);
@@ -619,7 +620,8 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt)
/* Prepare row for assignment to target table */
exprList = transformInsertRow(pstate, exprList,
stmt->cols,
- icolumns, attrnos);
+ icolumns, attrnos,
+ false);
}
else if (list_length(selectStmt->valuesLists) > 1)
{
@@ -663,10 +665,20 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt)
exprLocation((Node *) sublist))));
}
- /* Prepare row for assignment to target table */
+ /*
+ * Prepare row for assignment to target table. We process any
+ * indirection on the target column specs normally but then strip
+ * off the resulting field/array assignment nodes, since we don't
+ * want the parsed statement to contain copies of those in each
+ * VALUES row. (It's annoying to have to transform the
+ * indirection specs over and over like this, but avoiding it
+ * would take some really messy refactoring of
+ * transformAssignmentIndirection.)
+ */
sublist = transformInsertRow(pstate, sublist,
stmt->cols,
- icolumns, attrnos);
+ icolumns, attrnos,
+ true);
/*
* We must assign collations now because assign_query_collations
@@ -717,6 +729,14 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt)
* Generate list of Vars referencing the RTE
*/
expandRTE(rte, rtr->rtindex, 0, -1, false, NULL, &exprList);
+
+ /*
+ * Re-apply any indirection on the target column specs to the Vars
+ */
+ exprList = transformInsertRow(pstate, exprList,
+ stmt->cols,
+ icolumns, attrnos,
+ false);
}
else
{
@@ -739,7 +759,8 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt)
/* Prepare row for assignment to target table */
exprList = transformInsertRow(pstate, exprList,
stmt->cols,
- icolumns, attrnos);
+ icolumns, attrnos,
+ false);
}
/*
@@ -808,12 +829,17 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt)
/*
* Prepare an INSERT row for assignment to the target table.
*
- * The row might be either a VALUES row, or variables referencing a
- * sub-SELECT output.
+ * exprlist: transformed expressions for source values; these might come from
+ * a VALUES row, or be Vars referencing a sub-SELECT or VALUES RTE output.
+ * stmtcols: original target-columns spec for INSERT (we just test for NIL)
+ * icolumns: effective target-columns spec (list of ResTarget)
+ * attrnos: integer column numbers (must be same length as icolumns)
+ * strip_indirection: if true, remove any field/array assignment nodes
*/
static List *
transformInsertRow(ParseState *pstate, List *exprlist,
- List *stmtcols, List *icolumns, List *attrnos)
+ List *stmtcols, List *icolumns, List *attrnos,
+ bool strip_indirection)
{
List *result;
ListCell *lc;
@@ -879,6 +905,29 @@ transformInsertRow(ParseState *pstate, List *exprlist,
col->indirection,
col->location);
+ if (strip_indirection)
+ {
+ while (expr)
+ {
+ if (IsA(expr, FieldStore))
+ {
+ FieldStore *fstore = (FieldStore *) expr;
+
+ expr = (Expr *) linitial(fstore->newvals);
+ }
+ else if (IsA(expr, ArrayRef))
+ {
+ ArrayRef *aref = (ArrayRef *) expr;
+
+ if (aref->refassgnexpr == NULL)
+ break;
+ expr = aref->refassgnexpr;
+ }
+ else
+ break;
+ }
+ }
+
result = lappend(result, expr);
icols = lnext(icols);
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 80f0def75d5..d68ca7a7dc0 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -438,8 +438,7 @@ static void get_tablesample_def(TableSampleClause *tablesample,
deparse_context *context);
static void get_opclass_name(Oid opclass, Oid actual_datatype,
StringInfo buf);
-static Node *processIndirection(Node *node, deparse_context *context,
- bool printit);
+static Node *processIndirection(Node *node, deparse_context *context);
static void printSubscripts(ArrayRef *aref, deparse_context *context);
static char *get_relation_name(Oid relid);
static char *generate_relation_name(Oid relid, List *namespaces);
@@ -4551,11 +4550,9 @@ get_values_def(List *values_lists, deparse_context *context)
appendStringInfoChar(buf, ',');
/*
- * Strip any top-level nodes representing indirection assignments,
- * then print the result. Whole-row Vars need special treatment.
+ * Print the value. Whole-row Vars need special treatment.
*/
- get_rule_expr_toplevel(processIndirection(col, context, false),
- context, false);
+ get_rule_expr_toplevel(col, context, false);
}
appendStringInfoChar(buf, ')');
}
@@ -5512,7 +5509,6 @@ get_insert_query_def(Query *query, deparse_context *context)
RangeTblEntry *values_rte = NULL;
RangeTblEntry *rte;
char *sep;
- ListCell *values_cell;
ListCell *l;
List *strippedexprs;
@@ -5563,17 +5559,9 @@ get_insert_query_def(Query *query, deparse_context *context)
quote_identifier(rte->alias->aliasname));
/*
- * Add the insert-column-names list. To handle indirection properly, we
- * need to look for indirection nodes in the top targetlist (if it's
- * INSERT ... SELECT or INSERT ... single VALUES), or in the first
- * expression list of the VALUES RTE (if it's INSERT ... multi VALUES). We
- * assume that all the expression lists will have similar indirection in
- * the latter case.
+ * Add the insert-column-names list. Any indirection decoration needed on
+ * the column names can be inferred from the top targetlist.
*/
- if (values_rte)
- values_cell = list_head((List *) linitial(values_rte->values_lists));
- else
- values_cell = NULL;
strippedexprs = NIL;
sep = "";
if (query->targetList)
@@ -5599,20 +5587,14 @@ get_insert_query_def(Query *query, deparse_context *context)
/*
* Print any indirection needed (subfields or subscripts), and strip
* off the top-level nodes representing the indirection assignments.
+ * Add the stripped expressions to strippedexprs. (If it's a
+ * single-VALUES statement, the stripped expressions are the VALUES to
+ * print below. Otherwise they're just Vars and not really
+ * interesting.)
*/
- if (values_cell)
- {
- /* we discard the stripped expression in this case */
- processIndirection((Node *) lfirst(values_cell), context, true);
- values_cell = lnext(values_cell);
- }
- else
- {
- /* we keep a list of the stripped expressions in this case */
- strippedexprs = lappend(strippedexprs,
- processIndirection((Node *) tle->expr,
- context, true));
- }
+ strippedexprs = lappend(strippedexprs,
+ processIndirection((Node *) tle->expr,
+ context));
}
if (query->targetList)
appendStringInfoString(buf, ") ");
@@ -5891,7 +5873,7 @@ get_update_query_targetlist_def(Query *query, List *targetList,
* Print any indirection needed (subfields or subscripts), and strip
* off the top-level nodes representing the indirection assignments.
*/
- expr = processIndirection((Node *) tle->expr, context, true);
+ expr = processIndirection((Node *) tle->expr, context);
/*
* If we're in a multiassignment, skip printing anything more, unless
@@ -7296,7 +7278,7 @@ get_rule_expr(Node *node, deparse_context *context,
* subscripting in immediate descendants. It returns the
* RHS expr that is actually being "assigned".
*/
- refassgnexpr = processIndirection(node, context, true);
+ refassgnexpr = processIndirection(node, context);
appendStringInfoString(buf, " := ");
get_rule_expr(refassgnexpr, context, showimplicit);
}
@@ -9561,12 +9543,12 @@ get_opclass_name(Oid opclass, Oid actual_datatype,
* processIndirection - take care of array and subfield assignment
*
* We strip any top-level FieldStore or assignment ArrayRef nodes that
- * appear in the input, and return the subexpression that's to be assigned.
- * If printit is true, we also print out the appropriate decoration for the
- * base column name (that the caller just printed).
+ * appear in the input, printing them as decoration for the base column
+ * name (which we assume the caller just printed). Return the subexpression
+ * that's to be assigned.
*/
static Node *
-processIndirection(Node *node, deparse_context *context, bool printit)
+processIndirection(Node *node, deparse_context *context)
{
StringInfo buf = context->buf;
@@ -9594,8 +9576,7 @@ processIndirection(Node *node, deparse_context *context, bool printit)
Assert(list_length(fstore->fieldnums) == 1);
fieldname = get_relid_attribute_name(typrelid,
linitial_int(fstore->fieldnums));
- if (printit)
- appendStringInfo(buf, ".%s", quote_identifier(fieldname));
+ appendStringInfo(buf, ".%s", quote_identifier(fieldname));
/*
* We ignore arg since it should be an uninteresting reference to
@@ -9609,8 +9590,7 @@ processIndirection(Node *node, deparse_context *context, bool printit)
if (aref->refassgnexpr == NULL)
break;
- if (printit)
- printSubscripts(aref, context);
+ printSubscripts(aref, context);
/*
* We ignore refexpr since it should be an uninteresting reference
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index c3608cfba5b..25e26dbbf6d 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -53,6 +53,6 @@
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 201608021
+#define CATALOG_VERSION_NO 201608031
#endif
diff --git a/src/test/regress/expected/insert.out b/src/test/regress/expected/insert.out
index 96c7f9e430a..70107b5bf27 100644
--- a/src/test/regress/expected/insert.out
+++ b/src/test/regress/expected/insert.out
@@ -81,3 +81,82 @@ select col1, col2, char_length(col3) from inserttest;
(8 rows)
drop table inserttest;
+--
+-- check indirection (field/array assignment), cf bug #14265
+--
+-- these tests are aware that transformInsertStmt has 3 separate code paths
+--
+create type insert_test_type as (if1 int, if2 text[]);
+create table inserttest (f1 int, f2 int[],
+ f3 insert_test_type, f4 insert_test_type[]);
+insert into inserttest (f2[1], f2[2]) values (1,2);
+insert into inserttest (f2[1], f2[2]) values (3,4), (5,6);
+insert into inserttest (f2[1], f2[2]) select 7,8;
+insert into inserttest (f2[1], f2[2]) values (1,default); -- not supported
+ERROR: cannot set an array element to DEFAULT
+LINE 1: insert into inserttest (f2[1], f2[2]) values (1,default);
+ ^
+insert into inserttest (f3.if1, f3.if2) values (1,array['foo']);
+insert into inserttest (f3.if1, f3.if2) values (1,'{foo}'), (2,'{bar}');
+insert into inserttest (f3.if1, f3.if2) select 3, '{baz,quux}';
+insert into inserttest (f3.if1, f3.if2) values (1,default); -- not supported
+ERROR: cannot set a subfield to DEFAULT
+LINE 1: insert into inserttest (f3.if1, f3.if2) values (1,default);
+ ^
+insert into inserttest (f3.if2[1], f3.if2[2]) values ('foo', 'bar');
+insert into inserttest (f3.if2[1], f3.if2[2]) values ('foo', 'bar'), ('baz', 'quux');
+insert into inserttest (f3.if2[1], f3.if2[2]) select 'bear', 'beer';
+insert into inserttest (f4[1].if2[1], f4[1].if2[2]) values ('foo', 'bar');
+insert into inserttest (f4[1].if2[1], f4[1].if2[2]) values ('foo', 'bar'), ('baz', 'quux');
+insert into inserttest (f4[1].if2[1], f4[1].if2[2]) select 'bear', 'beer';
+select * from inserttest;
+ f1 | f2 | f3 | f4
+----+-------+------------------+------------------------
+ | {1,2} | |
+ | {3,4} | |
+ | {5,6} | |
+ | {7,8} | |
+ | | (1,{foo}) |
+ | | (1,{foo}) |
+ | | (2,{bar}) |
+ | | (3,"{baz,quux}") |
+ | | (,"{foo,bar}") |
+ | | (,"{foo,bar}") |
+ | | (,"{baz,quux}") |
+ | | (,"{bear,beer}") |
+ | | | {"(,\"{foo,bar}\")"}
+ | | | {"(,\"{foo,bar}\")"}
+ | | | {"(,\"{baz,quux}\")"}
+ | | | {"(,\"{bear,beer}\")"}
+(16 rows)
+
+-- also check reverse-listing
+create table inserttest2 (f1 bigint, f2 text);
+create rule irule1 as on insert to inserttest2 do also
+ insert into inserttest (f3.if2[1], f3.if2[2])
+ values (new.f1,new.f2);
+create rule irule2 as on insert to inserttest2 do also
+ insert into inserttest (f4[1].if1, f4[1].if2[2])
+ values (1,'fool'),(new.f1,new.f2);
+create rule irule3 as on insert to inserttest2 do also
+ insert into inserttest (f4[1].if1, f4[1].if2[2])
+ select new.f1, new.f2;
+\d+ inserttest2
+ Table "public.inserttest2"
+ Column | Type | Modifiers | Storage | Stats target | Description
+--------+--------+-----------+----------+--------------+-------------
+ f1 | bigint | | plain | |
+ f2 | text | | extended | |
+Rules:
+ irule1 AS
+ ON INSERT TO inserttest2 DO INSERT INTO inserttest (f3.if2[1], f3.if2[2])
+ VALUES (new.f1, new.f2)
+ irule2 AS
+ ON INSERT TO inserttest2 DO INSERT INTO inserttest (f4[1].if1, f4[1].if2[2]) VALUES (1,'fool'::text), (new.f1,new.f2)
+ irule3 AS
+ ON INSERT TO inserttest2 DO INSERT INTO inserttest (f4[1].if1, f4[1].if2[2]) SELECT new.f1,
+ new.f2
+
+drop table inserttest2;
+drop table inserttest;
+drop type insert_test_type;
diff --git a/src/test/regress/sql/insert.sql b/src/test/regress/sql/insert.sql
index a0ae85003fb..7924d5d46de 100644
--- a/src/test/regress/sql/insert.sql
+++ b/src/test/regress/sql/insert.sql
@@ -36,3 +36,51 @@ insert into inserttest values(30, 50, repeat('x', 10000));
select col1, col2, char_length(col3) from inserttest;
drop table inserttest;
+
+--
+-- check indirection (field/array assignment), cf bug #14265
+--
+-- these tests are aware that transformInsertStmt has 3 separate code paths
+--
+
+create type insert_test_type as (if1 int, if2 text[]);
+
+create table inserttest (f1 int, f2 int[],
+ f3 insert_test_type, f4 insert_test_type[]);
+
+insert into inserttest (f2[1], f2[2]) values (1,2);
+insert into inserttest (f2[1], f2[2]) values (3,4), (5,6);
+insert into inserttest (f2[1], f2[2]) select 7,8;
+insert into inserttest (f2[1], f2[2]) values (1,default); -- not supported
+
+insert into inserttest (f3.if1, f3.if2) values (1,array['foo']);
+insert into inserttest (f3.if1, f3.if2) values (1,'{foo}'), (2,'{bar}');
+insert into inserttest (f3.if1, f3.if2) select 3, '{baz,quux}';
+insert into inserttest (f3.if1, f3.if2) values (1,default); -- not supported
+
+insert into inserttest (f3.if2[1], f3.if2[2]) values ('foo', 'bar');
+insert into inserttest (f3.if2[1], f3.if2[2]) values ('foo', 'bar'), ('baz', 'quux');
+insert into inserttest (f3.if2[1], f3.if2[2]) select 'bear', 'beer';
+
+insert into inserttest (f4[1].if2[1], f4[1].if2[2]) values ('foo', 'bar');
+insert into inserttest (f4[1].if2[1], f4[1].if2[2]) values ('foo', 'bar'), ('baz', 'quux');
+insert into inserttest (f4[1].if2[1], f4[1].if2[2]) select 'bear', 'beer';
+
+select * from inserttest;
+
+-- also check reverse-listing
+create table inserttest2 (f1 bigint, f2 text);
+create rule irule1 as on insert to inserttest2 do also
+ insert into inserttest (f3.if2[1], f3.if2[2])
+ values (new.f1,new.f2);
+create rule irule2 as on insert to inserttest2 do also
+ insert into inserttest (f4[1].if1, f4[1].if2[2])
+ values (1,'fool'),(new.f1,new.f2);
+create rule irule3 as on insert to inserttest2 do also
+ insert into inserttest (f4[1].if1, f4[1].if2[2])
+ select new.f1, new.f2;
+\d+ inserttest2
+
+drop table inserttest2;
+drop table inserttest;
+drop type insert_test_type;
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-30 15:14:43 +0000