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sql: fix reporting of stored and key columns in pg_attribute
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The primary key was stored in pg_attribute using its table
attribute number and stored columns weren't included in
pg_attribute. This commit changes the behavior to match Postgres.

Release note (bug fix): Fixed the calculation of the
pg_attribute.attnum column for indexes so that the attnum is always
based on the order the column appears in the index. Also fixed the
pg_attribute table so that it includes stored columns in secondary indexes.
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@e-mbrown
e-mbrown committed Oct 19, 2022
1 parent dab196a commit caba33b
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Showing 2 changed files with 71 additions and 16 deletions.
67 changes: 53 additions & 14 deletions pkg/sql/logictest/testdata/logic_test/pg_catalog
View file
Original file line number Diff line number Diff line change
Expand Up @@ -715,22 +715,23 @@ attrelid relname attname atttypid attstattarget
110 t1 m 20 0 8 14 0 -1
110 t1 n 20 0 8 15 0 -1
3687884466 t1_pkey p 701 0 8 1 0 -1
3687884465 t1_a_key a 20 0 8 2 0 -1
3687884464 index_key b 20 0 8 3 0 -1
3687884464 index_key c 20 0 8 4 0 -1
3687884465 t1_a_key a 20 0 8 1 0 -1
3687884464 index_key b 20 0 8 1 0 -1
3687884464 index_key c 20 0 8 2 0 -1
111 t1_m_seq value 20 0 8 1 0 -1
112 t1_n_seq value 20 0 8 1 0 -1
113 t2 t1_id 20 0 8 1 0 -1
113 t2 rowid 20 0 8 2 0 -1
2955071325 t2_pkey rowid 20 0 8 2 0 -1
2955071325 t2_pkey rowid 20 0 8 1 0 -1
2955071326 t2_t1_id_idx t1_id 20 0 8 1 0 -1
114 t3 a 20 0 8 1 0 -1
114 t3 b 20 0 8 2 0 -1
114 t3 c 25 0 -1 3 0 -1
114 t3 rowid 20 0 8 4 0 -1
2695335054 t3_pkey rowid 20 0 8 4 0 -1
2695335054 t3_pkey rowid 20 0 8 1 0 -1
2695335053 t3_a_b_idx a 20 0 8 1 0 -1
2695335053 t3_a_b_idx b 20 0 8 2 0 -1
2695335053 t3_a_b_idx c 25 0 -1 3 0 -1
115 v1 p 701 0 8 1 0 -1
115 v1 a 20 0 8 2 0 -1
115 v1 b 20 0 8 3 0 -1
Expand All @@ -739,26 +740,26 @@ attrelid relname attname atttypid attstattarget
116 t4 b 701 0 8 2 0 -1
116 t4 c 25 0 -1 3 0 -1
116 t4 rowid 20 0 8 4 0 -1
3214807592 t4_pkey rowid 20 0 8 4 0 -1
3214807592 t4_pkey rowid 20 0 8 1 0 -1
117 t5 a 20 0 8 1 0 -1
117 t5 b 701 0 8 2 0 -1
117 t5 c 25 0 -1 3 0 -1
117 t5 rowid 20 0 8 4 0 -1
1869730585 t5_pkey rowid 20 0 8 4 0 -1
1869730585 t5_pkey rowid 20 0 8 1 0 -1
120 t6 a 20 0 8 1 0 -1
120 t6 b 20 0 8 2 0 -1
120 t6 c 25 0 -1 3 0 -1
120 t6 m 100118 0 -1 4 0 -1
120 t6 rowid 20 0 8 6 0 -1
2129466852 t6_pkey rowid 20 0 8 6 0 -1
2129466855 t6_expr_idx crdb_internal_idx_expr 20 0 8 5 0 -1
2129466854 t6_expr_expr1_idx crdb_internal_idx_expr_1 25 0 -1 7 0 -1
2129466854 t6_expr_expr1_idx crdb_internal_idx_expr 20 0 8 5 0 -1
2129466848 t6_expr_key crdb_internal_idx_expr_1 25 0 -1 7 0 -1
2129466850 t6_expr_idx1 crdb_internal_idx_expr_2 16 0 1 8 0 -1
2129466852 t6_pkey rowid 20 0 8 1 0 -1
2129466855 t6_expr_idx crdb_internal_idx_expr 20 0 8 1 0 -1
2129466854 t6_expr_expr1_idx crdb_internal_idx_expr_1 25 0 -1 1 0 -1
2129466854 t6_expr_expr1_idx crdb_internal_idx_expr 20 0 8 2 0 -1
2129466848 t6_expr_key crdb_internal_idx_expr_1 25 0 -1 1 0 -1
2129466850 t6_expr_idx1 crdb_internal_idx_expr_2 16 0 1 1 0 -1
121 mv1 ?column? 20 0 8 1 0 -1
121 mv1 rowid 20 0 8 2 0 -1
784389845 mv1_pkey rowid 20 0 8 2 0 -1
784389845 mv1_pkey rowid 20 0 8 1 0 -1

query TTIBTTBBTT colnames,rowsort
SELECT c.relname, attname, atttypmod, attbyval, attstorage, attalign, attnotnull, atthasdef, attidentity, attgenerated
Expand Down Expand Up @@ -800,6 +801,7 @@ t3 rowid -1 NULL NULL NU
t3_pkey rowid -1 NULL NULL NULL true true · ·
t3_a_b_idx a -1 NULL NULL NULL false false · ·
t3_a_b_idx b -1 NULL NULL NULL false false · ·
t3_a_b_idx c -1 NULL NULL NULL false true · ·
v1 p -1 NULL NULL NULL false false · ·
v1 a -1 NULL NULL NULL false false · ·
v1 b -1 NULL NULL NULL false false · ·
Expand Down Expand Up @@ -869,6 +871,7 @@ t3 rowid false true 0
t3_pkey rowid false true 0 NULL NULL NULL
t3_a_b_idx a false true 0 NULL NULL NULL
t3_a_b_idx b false true 0 NULL NULL NULL
t3_a_b_idx c false true 0 NULL NULL NULL
v1 p false true 0 NULL NULL NULL
v1 a false true 0 NULL NULL NULL
v1 b false true 0 NULL NULL NULL
Expand Down Expand Up @@ -958,6 +961,7 @@ t6_expr_expr1_idx crdb_internal_idx_expr_1 text 3403232968 default
t6 c text 3403232968 default
t5 c text 3403232968 default
t4 c text 3403232968 default
t3_a_b_idx c text 3403232968 default
t3 c text 3403232968 default
t1 j char 3403232968 default
t1 i _varchar 3403232968 default
Expand Down Expand Up @@ -6066,3 +6070,38 @@ COMMIT;

statement ok
DROP TABLE t;

## Check key columns for indexes PG_Attribute
statement ok
CREATE TABLE t1(x int, y int primary key);

statement ok
CREATE TABLE t2(x int, y int);

statement ok
CREATE TABLE t3(x int, y int);

statement ok
CREATE INDEX t3idx ON t3(x) include(y);

query IT colnames
select attnum, attname from pg_attribute a join pg_class c on c.oid = a.attrelid where c.relname = 't1_pkey'
order by attnum;
----
attnum attname
1 y

query IT colnames
select attnum, attname from pg_attribute a join pg_class c on c.oid = a.attrelid where c.relname = 't2_pkey'
order by attnum;
----
attnum attname
1 rowid

query IT colnames
select attnum, attname from pg_attribute a join pg_class c on c.oid = a.attrelid where c.relname = 't3idx'
order by attnum;
----
attnum attname
1 x
2 y
20 changes: 18 additions & 2 deletions pkg/sql/pg_catalog.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -467,11 +467,27 @@ https://www.postgresql.org/docs/12/catalog-pg-attribute.html`,
// Columns for each index.
columnIdxMap := catalog.ColumnIDToOrdinalMap(table.PublicColumns())
return catalog.ForEachIndex(table, catalog.IndexOpts{}, func(index catalog.Index) error {
idxID := h.IndexOid(table.GetID(), index.GetID())

for i := 0; i < index.NumKeyColumns(); i++ {
colID := index.GetKeyColumnID(i)
idxID := h.IndexOid(table.GetID(), index.GetID())
column := table.PublicColumns()[columnIdxMap.GetDefault(colID)]
if err := addColumn(column, idxID, uint32(column.GetPGAttributeNum())); err != nil {
// The attnum for columns in an index is the order it appears in the
// index definition and is not related to the attnum the column has in
// the table.
if err := addColumn(column, idxID, uint32(i+1)); err != nil {
return err
}
}
// pg_attribute only includes stored columns for secondary indexes, not
// for primary indexes
for i := 0; i < index.NumSecondaryStoredColumns(); i++ {
colID := index.GetStoredColumnID(i)
column := table.PublicColumns()[columnIdxMap.GetDefault(colID)]
// The attnum for columns in an index is the order it appears in the
// index definition and is not related to the attnum the column has in
// the table.
if err := addColumn(column, idxID, uint32(i+1+index.NumKeyColumns())); err != nil {
return err
}
}
Expand Down

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