>
>
> Thank you for feedback.
I improved my patch recently and tested it on different sizes of
MAX_BUFFERED_TUPLES and REPLAY_BUFFER_SIZE.
> I loaded 10000 rows which contained 1 wrong row.
> I expected I could see 9999 rows after COPY, but just saw 999 rows.
Also I implemented your case and it worked correctly.
> BTW I may be overlooking it, but have you submit this proposal to the
next CommitFest?
Good idea. Haven't done it yet.
Regards,
Damir
Postgres Professional
From fa6b99c129eb890b25f006bb7891a247c8a431a7 Mon Sep 17 00:00:00 2001
From: Damir Belyalov <dam.be...@gmail.com>
Date: Fri, 15 Oct 2021 11:55:18 +0300
Subject: [PATCH] COPY_IGNORE_ERRORS without GUC with function
safeNextCopyFrom() with struct SafeCopyFromState with refactoring
---
doc/src/sgml/ref/copy.sgml | 13 ++
src/backend/commands/copy.c | 8 ++
src/backend/commands/copyfrom.c | 162 ++++++++++++++++++++++-
src/backend/parser/gram.y | 8 +-
src/bin/psql/tab-complete.c | 3 +-
src/include/commands/copy.h | 1 +
src/include/commands/copyfrom_internal.h | 21 +++
src/include/parser/kwlist.h | 1 +
src/test/regress/expected/copy2.out | 123 +++++++++++++++++
src/test/regress/sql/copy2.sql | 110 +++++++++++++++
10 files changed, 445 insertions(+), 5 deletions(-)
diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index 8aae711b3b..7d20b1649e 100644
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -34,6 +34,7 @@ COPY { <replaceable class="parameter">table_name</replaceable> [ ( <replaceable
FORMAT <replaceable class="parameter">format_name</replaceable>
FREEZE [ <replaceable class="parameter">boolean</replaceable> ]
+ IGNORE_ERRORS [ <replaceable class="parameter">boolean</replaceable> ]
DELIMITER '<replaceable class="parameter">delimiter_character</replaceable>'
NULL '<replaceable class="parameter">null_string</replaceable>'
HEADER [ <replaceable class="parameter">boolean</replaceable> | MATCH ]
@@ -233,6 +234,18 @@ COPY { <replaceable class="parameter">table_name</replaceable> [ ( <replaceable
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><literal>IGNORE_ERRORS</literal></term>
+ <listitem>
+ <para>
+ Drop rows that contain malformed data while copying. That is rows
+ containing syntax errors in data, rows with too many or too few columns,
+ rows that result in constraint violations, rows containing columns where
+ the data type's input function raises an error.
+ </para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term><literal>DELIMITER</literal></term>
<listitem>
diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c
index 3ac731803b..fead1aba46 100644
--- a/src/backend/commands/copy.c
+++ b/src/backend/commands/copy.c
@@ -402,6 +402,7 @@ ProcessCopyOptions(ParseState *pstate,
{
bool format_specified = false;
bool freeze_specified = false;
+ bool ignore_errors_specified = false;
bool header_specified = false;
ListCell *option;
@@ -442,6 +443,13 @@ ProcessCopyOptions(ParseState *pstate,
freeze_specified = true;
opts_out->freeze = defGetBoolean(defel);
}
+ else if (strcmp(defel->defname, "ignore_errors") == 0)
+ {
+ if (ignore_errors_specified)
+ errorConflictingDefElem(defel, pstate);
+ ignore_errors_specified = true;
+ opts_out->ignore_errors = defGetBoolean(defel);
+ }
else if (strcmp(defel->defname, "delimiter") == 0)
{
if (opts_out->delim)
diff --git a/src/backend/commands/copyfrom.c b/src/backend/commands/copyfrom.c
index a976008b3d..285c491ddd 100644
--- a/src/backend/commands/copyfrom.c
+++ b/src/backend/commands/copyfrom.c
@@ -106,6 +106,9 @@ static char *limit_printout_length(const char *str);
static void ClosePipeFromProgram(CopyFromState cstate);
+static bool safeNextCopyFrom(CopyFromState cstate, ExprContext *econtext,
+ Datum *values, bool *nulls);
+
/*
* error context callback for COPY FROM
*
@@ -521,6 +524,125 @@ CopyMultiInsertInfoStore(CopyMultiInsertInfo *miinfo, ResultRelInfo *rri,
miinfo->bufferedBytes += tuplen;
}
+/*
+ * Analog of NextCopyFrom() but ignore rows with errors while copying.
+ */
+static bool
+safeNextCopyFrom(CopyFromState cstate, ExprContext *econtext, Datum *values, bool *nulls)
+{
+ SafeCopyFromState *safecstate = cstate->safecstate;
+ bool valid_row = true;
+
+ safecstate->skip_row = false;
+
+ PG_TRY();
+ {
+ if (!safecstate->replay_is_active)
+ {
+ if (safecstate->begin_subtransaction)
+ {
+ BeginInternalSubTransaction(NULL);
+ CurrentResourceOwner = safecstate->oldowner;
+
+ safecstate->begin_subtransaction = false;
+ }
+
+ if (safecstate->saved_tuples < REPLAY_BUFFER_SIZE)
+ {
+ valid_row = NextCopyFrom(cstate, econtext, values, nulls);
+ if (valid_row)
+ {
+ /* Fill replay_buffer in oldcontext*/
+ MemoryContextSwitchTo(safecstate->oldcontext);
+ safecstate->replay_buffer[safecstate->saved_tuples++] = heap_form_tuple(RelationGetDescr(cstate->rel), values, nulls);
+
+ safecstate->skip_row = true;
+ }
+ else if (!safecstate->processed_remaining_tuples)
+ {
+ ReleaseCurrentSubTransaction();
+ CurrentResourceOwner = safecstate->oldowner;
+ if (safecstate->replayed_tuples < safecstate->saved_tuples)
+ {
+ /* Prepare to replay remaining tuples if they exist */
+ safecstate->replay_is_active = true;
+ safecstate->processed_remaining_tuples = true;
+ safecstate->skip_row = true;
+ return true;
+ }
+ }
+ }
+ else
+ {
+ /* Buffer was filled, commit subtransaction and prepare to replay */
+ ReleaseCurrentSubTransaction();
+ CurrentResourceOwner = safecstate->oldowner;
+
+ safecstate->replay_is_active = true;
+ safecstate->begin_subtransaction = true;
+ safecstate->skip_row = true;
+ }
+ }
+ else
+ {
+ if (safecstate->replayed_tuples < safecstate->saved_tuples)
+ {
+ /* Replaying tuple */
+ heap_deform_tuple(safecstate->replay_buffer[safecstate->replayed_tuples++], RelationGetDescr(cstate->rel), values, nulls);
+ }
+ else
+ {
+ /* Clean up replay_buffer */
+ MemSet(safecstate->replay_buffer, 0, REPLAY_BUFFER_SIZE * sizeof(HeapTuple));
+ safecstate->saved_tuples = safecstate->replayed_tuples = 0;
+
+ safecstate->replay_is_active = false;
+ safecstate->skip_row = true;
+ }
+ }
+ }
+ PG_CATCH();
+ {
+ ErrorData *errdata;
+ MemoryContextSwitchTo(safecstate->oldcontext);
+ errdata = CopyErrorData();
+
+ switch (errdata->sqlerrcode)
+ {
+ case ERRCODE_BAD_COPY_FILE_FORMAT:
+ case ERRCODE_INVALID_TEXT_REPRESENTATION:
+ RollbackAndReleaseCurrentSubTransaction();
+ CurrentResourceOwner = safecstate->oldowner;
+
+ safecstate->errors++;
+ if (safecstate->errors <= 100)
+ ereport(WARNING,
+ (errcode(errdata->sqlerrcode),
+ errmsg("%s", errdata->context)));
+
+ safecstate->begin_subtransaction = true;
+ safecstate->skip_row = true;
+ break;
+ default:
+ PG_RE_THROW();
+ }
+
+ FlushErrorState();
+ FreeErrorData(errdata);
+ errdata = NULL;
+ }
+ PG_END_TRY();
+
+ if (!valid_row)
+ {
+ ereport(WARNING,
+ errmsg("FIND %d ERRORS", safecstate->errors));
+ return false;
+ }
+
+ return true;
+}
+
/*
* Copy FROM file to relation.
*/
@@ -535,6 +657,7 @@ CopyFrom(CopyFromState cstate)
ExprContext *econtext;
TupleTableSlot *singleslot = NULL;
MemoryContext oldcontext = CurrentMemoryContext;
+ ResourceOwner oldowner = CurrentResourceOwner;
PartitionTupleRouting *proute = NULL;
ErrorContextCallback errcallback;
@@ -819,6 +942,23 @@ CopyFrom(CopyFromState cstate)
errcallback.previous = error_context_stack;
error_context_stack = &errcallback;
+ /* Initialize safeCopyFromState for IGNORE_ERRORS option*/
+ if (cstate->opts.ignore_errors)
+ {
+ cstate->safecstate = palloc(sizeof(SafeCopyFromState));
+
+ cstate->safecstate->saved_tuples = 0;
+ cstate->safecstate->replayed_tuples = 0;
+ cstate->safecstate->errors = 0;
+ cstate->safecstate->replay_is_active = false;
+ cstate->safecstate->begin_subtransaction = true;
+ cstate->safecstate->processed_remaining_tuples = false;
+
+ cstate->safecstate->oldowner = oldowner;
+ cstate->safecstate->oldcontext = oldcontext;
+ cstate->safecstate->insertMethod = insertMethod;
+ }
+
for (;;)
{
TupleTableSlot *myslot;
@@ -855,9 +995,25 @@ CopyFrom(CopyFromState cstate)
ExecClearTuple(myslot);
- /* Directly store the values/nulls array in the slot */
- if (!NextCopyFrom(cstate, econtext, myslot->tts_values, myslot->tts_isnull))
- break;
+ /*
+ * If option IGNORE_ERRORS is enabled, COPY skips rows with errors.
+ * NextCopyFrom() directly store the values/nulls array in the slot.
+ */
+ if (cstate->safecstate)
+ {
+ bool valid_row = safeNextCopyFrom(cstate, econtext, myslot->tts_values, myslot->tts_isnull);
+
+ /* Cannot continue or break in PG_TRY in safeNextCopyFrom() */
+ if (cstate->safecstate->skip_row)
+ continue;
+ if (!valid_row)
+ break;
+ }
+ else
+ {
+ if (!NextCopyFrom(cstate, econtext, myslot->tts_values, myslot->tts_isnull))
+ break;
+ }
ExecStoreVirtualTuple(myslot);
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index df5ceea910..3bb7235b34 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -800,7 +800,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
HANDLER HAVING HEADER_P HOLD HOUR_P
- IDENTITY_P IF_P ILIKE IMMEDIATE IMMUTABLE IMPLICIT_P IMPORT_P IN_P INCLUDE
+ IDENTITY_P IF_P IGNORE_ERRORS ILIKE IMMEDIATE IMMUTABLE IMPLICIT_P IMPORT_P IN_P INCLUDE
INCLUDING INCREMENT INDEX INDEXES INHERIT INHERITS INITIALLY INLINE_P
INNER_P INOUT INPUT_P INSENSITIVE INSERT INSTEAD INT_P INTEGER
INTERSECT INTERVAL INTO INVOKER IS ISNULL ISOLATION
@@ -3456,6 +3456,10 @@ copy_opt_item:
{
$$ = makeDefElem("freeze", (Node *) makeBoolean(true), @1);
}
+ | IGNORE_ERRORS
+ {
+ $$ = makeDefElem("ignore_errors", (Node *)makeInteger(true), @1);
+ }
| DELIMITER opt_as Sconst
{
$$ = makeDefElem("delimiter", (Node *) makeString($3), @1);
@@ -17814,6 +17818,7 @@ unreserved_keyword:
| HOUR_P
| IDENTITY_P
| IF_P
+ | IGNORE_ERRORS
| IMMEDIATE
| IMMUTABLE
| IMPLICIT_P
@@ -18393,6 +18398,7 @@ bare_label_keyword:
| HOLD
| IDENTITY_P
| IF_P
+ | IGNORE_ERRORS
| ILIKE
| IMMEDIATE
| IMMUTABLE
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index e572f585ef..feaf18b043 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -2742,7 +2742,8 @@ psql_completion(const char *text, int start, int end)
else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", MatchAny, "WITH", "("))
COMPLETE_WITH("FORMAT", "FREEZE", "DELIMITER", "NULL",
"HEADER", "QUOTE", "ESCAPE", "FORCE_QUOTE",
- "FORCE_NOT_NULL", "FORCE_NULL", "ENCODING");
+ "FORCE_NOT_NULL", "FORCE_NULL", "ENCODING",
+ "IGNORE_ERRORS");
/* Complete COPY <sth> FROM|TO filename WITH (FORMAT */
else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", MatchAny, "WITH", "(", "FORMAT"))
diff --git a/src/include/commands/copy.h b/src/include/commands/copy.h
index cb0096aeb6..2b696f99bc 100644
--- a/src/include/commands/copy.h
+++ b/src/include/commands/copy.h
@@ -42,6 +42,7 @@ typedef struct CopyFormatOptions
* -1 if not specified */
bool binary; /* binary format? */
bool freeze; /* freeze rows on loading? */
+ bool ignore_errors; /* ignore rows with errors */
bool csv_mode; /* Comma Separated Value format? */
CopyHeaderChoice header_line; /* header line? */
char *null_print; /* NULL marker string (server encoding!) */
diff --git a/src/include/commands/copyfrom_internal.h b/src/include/commands/copyfrom_internal.h
index 3df1c5a97c..d9d3af1fb4 100644
--- a/src/include/commands/copyfrom_internal.h
+++ b/src/include/commands/copyfrom_internal.h
@@ -16,6 +16,8 @@
#include "commands/copy.h"
#include "commands/trigger.h"
+#include "utils/resowner.h"
+
/*
* Represents the different source cases we need to worry about at
@@ -49,6 +51,24 @@ typedef enum CopyInsertMethod
CIM_MULTI_CONDITIONAL /* use table_multi_insert only if valid */
} CopyInsertMethod;
+/* Struct that holding fields for ignore_errors option. */
+typedef struct SafeCopyFromState
+{
+#define REPLAY_BUFFER_SIZE 1000
+ HeapTuple replay_buffer[REPLAY_BUFFER_SIZE]; /* accumulates tuples for replaying it after an error */
+ int saved_tuples; /* # of tuples in replay_buffer */
+ int replayed_tuples; /* # of tuples was replayed from buffer */
+ int errors; /* total # of errors */
+ bool replay_is_active;
+ bool begin_subtransaction;
+ bool processed_remaining_tuples; /* for case of replaying last tuples */
+ bool skip_row;
+
+ MemoryContext oldcontext;
+ ResourceOwner oldowner;
+ CopyInsertMethod insertMethod;
+} SafeCopyFromState;
+
/*
* This struct contains all the state variables used throughout a COPY FROM
* operation.
@@ -71,6 +91,7 @@ typedef struct CopyFromStateData
char *filename; /* filename, or NULL for STDIN */
bool is_program; /* is 'filename' a program to popen? */
copy_data_source_cb data_source_cb; /* function for reading data */
+ SafeCopyFromState *safecstate; /* struct for ignore_errors option */
CopyFormatOptions opts;
bool *convert_select_flags; /* per-column CSV/TEXT CS flags */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index ae35f03251..2af11bd359 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -201,6 +201,7 @@ PG_KEYWORD("hold", HOLD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("hour", HOUR_P, UNRESERVED_KEYWORD, AS_LABEL)
PG_KEYWORD("identity", IDENTITY_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("if", IF_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("ignore_errors", IGNORE_ERRORS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("ilike", ILIKE, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("immediate", IMMEDIATE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("immutable", IMMUTABLE, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/test/regress/expected/copy2.out b/src/test/regress/expected/copy2.out
index 5f3685e9ef..ab1f059a02 100644
--- a/src/test/regress/expected/copy2.out
+++ b/src/test/regress/expected/copy2.out
@@ -649,6 +649,129 @@ SELECT * FROM instead_of_insert_tbl;
(2 rows)
COMMIT;
+-- tests for IGNORE_ERRORS option
+-- CIM_MULTI case
+CREATE TABLE check_ign_err (n int, m int, k int);
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS;
+WARNING: COPY check_ign_err, line 2: "2 2 2 2"
+WARNING: COPY check_ign_err, line 3: "3 3"
+WARNING: COPY check_ign_err, line 4, column n: "a"
+WARNING: COPY check_ign_err, line 5, column m: "b"
+WARNING: COPY check_ign_err, line 6, column n: ""
+WARNING: FIND 5 ERRORS
+SELECT * FROM check_ign_err;
+ n | m | k
+---+---+---
+ 1 | 1 | 1
+ 7 | 7 | 7
+(2 rows)
+
+-- CIM_SINGLE case
+-- BEFORE row trigger
+TRUNCATE check_ign_err;
+CREATE TABLE trig_test(n int, m int);
+CREATE FUNCTION fn_trig_before () RETURNS TRIGGER AS '
+ BEGIN
+ INSERT INTO trig_test VALUES(NEW.n, NEW.m);
+ RETURN NEW;
+ END;
+' LANGUAGE plpgsql;
+CREATE TRIGGER trig_before BEFORE INSERT ON check_ign_err
+FOR EACH ROW EXECUTE PROCEDURE fn_trig_before();
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS;
+WARNING: COPY check_ign_err, line 2: "2 2 2 2"
+WARNING: COPY check_ign_err, line 3: "3 3"
+WARNING: COPY check_ign_err, line 4, column n: "a"
+WARNING: COPY check_ign_err, line 5, column m: "b"
+WARNING: COPY check_ign_err, line 6, column n: ""
+WARNING: FIND 5 ERRORS
+SELECT * FROM check_ign_err;
+ n | m | k
+---+---+---
+ 1 | 1 | 1
+ 7 | 7 | 7
+(2 rows)
+
+DROP TRIGGER trig_before on check_ign_err;
+-- INSTEAD OF row trigger
+TRUNCATE check_ign_err;
+TRUNCATE trig_test;
+CREATE VIEW check_ign_err_view AS SELECT * FROM check_ign_err;
+CREATE FUNCTION fn_trig_instead_of () RETURNS TRIGGER AS '
+ BEGIN
+ INSERT INTO check_ign_err VALUES(NEW.n, NEW.m, NEW.k);
+ RETURN NEW;
+ END;
+' LANGUAGE plpgsql;
+CREATE TRIGGER trig_instead_of INSTEAD OF INSERT ON check_ign_err_view
+FOR EACH ROW EXECUTE PROCEDURE fn_trig_instead_of();
+COPY check_ign_err_view FROM STDIN WITH IGNORE_ERRORS;
+WARNING: COPY check_ign_err_view, line 2: "2 2 2 2"
+WARNING: COPY check_ign_err_view, line 3: "3 3"
+WARNING: COPY check_ign_err_view, line 4, column n: "a"
+WARNING: COPY check_ign_err_view, line 5, column m: "b"
+WARNING: COPY check_ign_err_view, line 6, column n: ""
+WARNING: FIND 5 ERRORS
+SELECT * FROM check_ign_err_view;
+ n | m | k
+---+---+---
+ 1 | 1 | 1
+ 7 | 7 | 7
+(2 rows)
+
+DROP TRIGGER trig_instead_of ON check_ign_err_view;
+DROP VIEW check_ign_err_view;
+-- foreign table case in postgres_fdw extension
+-- volatile function in WHERE clause
+TRUNCATE check_ign_err;
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS
+ WHERE n = floor(random()*(1-1+1))+1; /* find values equal 1 */
+WARNING: COPY check_ign_err, line 2: "2 2 2 2"
+WARNING: COPY check_ign_err, line 3: "3 3"
+WARNING: COPY check_ign_err, line 4, column n: "a"
+WARNING: COPY check_ign_err, line 5, column m: "b"
+WARNING: COPY check_ign_err, line 6, column n: ""
+WARNING: FIND 5 ERRORS
+SELECT * FROM check_ign_err;
+ n | m | k
+---+---+---
+ 1 | 1 | 1
+(1 row)
+
+DROP TABLE check_ign_err;
+-- CIM_MULTI_CONDITIONAL case
+-- INSERT triggers for partition tables
+TRUNCATE trig_test;
+CREATE TABLE check_ign_err (n int, m int, k int) PARTITION BY RANGE (n);
+CREATE TABLE check_ign_err_part1 PARTITION OF check_ign_err
+ FOR VALUES FROM (1) TO (4);
+CREATE TABLE check_ign_err_part2 PARTITION OF check_ign_err
+ FOR VALUES FROM (4) TO (8);
+CREATE FUNCTION fn_trig_before_part () RETURNS TRIGGER AS '
+ BEGIN
+ INSERT INTO trig_test VALUES(NEW.n, NEW.m);
+ RETURN NEW;
+ END;
+' LANGUAGE plpgsql;
+CREATE TRIGGER trig_before_part BEFORE INSERT ON check_ign_err
+FOR EACH ROW EXECUTE PROCEDURE fn_trig_before_part();
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS;
+WARNING: COPY check_ign_err, line 2: "2 2 2 2"
+WARNING: COPY check_ign_err, line 3: "3 3"
+WARNING: COPY check_ign_err, line 4, column n: "a"
+WARNING: COPY check_ign_err, line 5, column m: "b"
+WARNING: COPY check_ign_err, line 6, column n: ""
+WARNING: FIND 5 ERRORS
+SELECT * FROM check_ign_err;
+ n | m | k
+---+---+---
+ 1 | 1 | 1
+ 7 | 7 | 7
+(2 rows)
+
+DROP TRIGGER trig_before_part on check_ign_err;
+DROP TABLE trig_test;
+DROP TABLE check_ign_err CASCADE;
-- clean up
DROP TABLE forcetest;
DROP TABLE vistest;
diff --git a/src/test/regress/sql/copy2.sql b/src/test/regress/sql/copy2.sql
index b3c16af48e..7eee78bccd 100644
--- a/src/test/regress/sql/copy2.sql
+++ b/src/test/regress/sql/copy2.sql
@@ -454,6 +454,116 @@ test1
SELECT * FROM instead_of_insert_tbl;
COMMIT;
+-- tests for IGNORE_ERRORS option
+-- CIM_MULTI case
+CREATE TABLE check_ign_err (n int, m int, k int);
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS;
+1 1 1
+2 2 2 2
+3 3
+a 4 4
+5 b b
+
+7 7 7
+\.
+SELECT * FROM check_ign_err;
+
+-- CIM_SINGLE case
+-- BEFORE row trigger
+TRUNCATE check_ign_err;
+CREATE TABLE trig_test(n int, m int);
+CREATE FUNCTION fn_trig_before () RETURNS TRIGGER AS '
+ BEGIN
+ INSERT INTO trig_test VALUES(NEW.n, NEW.m);
+ RETURN NEW;
+ END;
+' LANGUAGE plpgsql;
+CREATE TRIGGER trig_before BEFORE INSERT ON check_ign_err
+FOR EACH ROW EXECUTE PROCEDURE fn_trig_before();
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS;
+1 1 1
+2 2 2 2
+3 3
+a 4 4
+5 b b
+
+7 7 7
+\.
+SELECT * FROM check_ign_err;
+DROP TRIGGER trig_before on check_ign_err;
+
+-- INSTEAD OF row trigger
+TRUNCATE check_ign_err;
+TRUNCATE trig_test;
+CREATE VIEW check_ign_err_view AS SELECT * FROM check_ign_err;
+CREATE FUNCTION fn_trig_instead_of () RETURNS TRIGGER AS '
+ BEGIN
+ INSERT INTO check_ign_err VALUES(NEW.n, NEW.m, NEW.k);
+ RETURN NEW;
+ END;
+' LANGUAGE plpgsql;
+CREATE TRIGGER trig_instead_of INSTEAD OF INSERT ON check_ign_err_view
+FOR EACH ROW EXECUTE PROCEDURE fn_trig_instead_of();
+COPY check_ign_err_view FROM STDIN WITH IGNORE_ERRORS;
+1 1 1
+2 2 2 2
+3 3
+a 4 4
+5 b b
+
+7 7 7
+\.
+SELECT * FROM check_ign_err_view;
+DROP TRIGGER trig_instead_of ON check_ign_err_view;
+DROP VIEW check_ign_err_view;
+
+-- foreign table case in postgres_fdw extension
+
+-- volatile function in WHERE clause
+TRUNCATE check_ign_err;
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS
+ WHERE n = floor(random()*(1-1+1))+1; /* find values equal 1 */
+1 1 1
+2 2 2 2
+3 3
+a 4 4
+5 b b
+
+7 7 7
+\.
+SELECT * FROM check_ign_err;
+DROP TABLE check_ign_err;
+
+-- CIM_MULTI_CONDITIONAL case
+-- INSERT triggers for partition tables
+TRUNCATE trig_test;
+CREATE TABLE check_ign_err (n int, m int, k int) PARTITION BY RANGE (n);
+CREATE TABLE check_ign_err_part1 PARTITION OF check_ign_err
+ FOR VALUES FROM (1) TO (4);
+CREATE TABLE check_ign_err_part2 PARTITION OF check_ign_err
+ FOR VALUES FROM (4) TO (8);
+CREATE FUNCTION fn_trig_before_part () RETURNS TRIGGER AS '
+ BEGIN
+ INSERT INTO trig_test VALUES(NEW.n, NEW.m);
+ RETURN NEW;
+ END;
+' LANGUAGE plpgsql;
+CREATE TRIGGER trig_before_part BEFORE INSERT ON check_ign_err
+FOR EACH ROW EXECUTE PROCEDURE fn_trig_before_part();
+COPY check_ign_err FROM STDIN WITH IGNORE_ERRORS;
+1 1 1
+2 2 2 2
+3 3
+a 4 4
+5 b b
+
+7 7 7
+\.
+SELECT * FROM check_ign_err;
+DROP TRIGGER trig_before_part on check_ign_err;
+DROP TABLE trig_test;
+DROP TABLE check_ign_err CASCADE;
+
-- clean up
DROP TABLE forcetest;
DROP TABLE vistest;
--
2.25.1
