From 95477e6d0238703b5d7e3870dcf0bd0de7b2a1d4 Mon Sep 17 00:00:00 2001 From: Mehmet YILMAZ Date: Fri, 24 Oct 2025 15:09:49 +0300 Subject: [PATCH] PG18 - Add BUFFERS OFF to remaining EXPLAIN calls (#8288) fixes #8093 https://github.com/postgres/postgres/commit/c2a4078ebad71999dd451ae7d4358be3c9290b07 - Enable buffer-usage reporting by default in `EXPLAIN ANALYZE` on PostgreSQL 18 and above. - Introduce the explicit `BUFFERS OFF` option in every existing regression test to maintain pre-PG18 output consistency. - This appends, `BUFFERS OFF` to all `EXPLAIN(...)` calls in src/test/regress/sql and the corresponding .out files. --- src/test/regress/expected/local_shard_execution.out | 8 ++++---- .../regress/expected/local_shard_execution_replicated.out | 8 ++++---- src/test/regress/expected/multi_explain.out | 2 +- src/test/regress/expected/multi_explain_0.out | 2 +- src/test/regress/sql/local_shard_execution.sql | 4 ++-- src/test/regress/sql/local_shard_execution_replicated.sql | 4 ++-- src/test/regress/sql/multi_explain.sql | 2 +- 7 files changed, 15 insertions(+), 15 deletions(-) diff --git a/src/test/regress/expected/local_shard_execution.out b/src/test/regress/expected/local_shard_execution.out index 0f0c7a14e..3348db63a 100644 --- a/src/test/regress/expected/local_shard_execution.out +++ b/src/test/regress/expected/local_shard_execution.out @@ -312,8 +312,8 @@ EXPLAIN (COSTS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; Filter: (age = 20) (8 rows) -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; - QUERY PLAN +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; + QUERY PLAN --------------------------------------------------------------------- Custom Scan (Citus Adaptive) (actual rows=1 loops=1) Task Count: 1 @@ -368,8 +368,8 @@ EXPLAIN (COSTS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; Filter: (age = 20) (9 rows) -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; - QUERY PLAN +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; + QUERY PLAN --------------------------------------------------------------------- Custom Scan (Citus Adaptive) (actual rows=0 loops=1) Task Count: 1 diff --git a/src/test/regress/expected/local_shard_execution_replicated.out b/src/test/regress/expected/local_shard_execution_replicated.out index bf49cc2ee..835df717d 100644 --- a/src/test/regress/expected/local_shard_execution_replicated.out +++ b/src/test/regress/expected/local_shard_execution_replicated.out @@ -250,8 +250,8 @@ EXPLAIN (COSTS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; Filter: (age = 20) (8 rows) -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; - QUERY PLAN +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; + QUERY PLAN --------------------------------------------------------------------- Custom Scan (Citus Adaptive) (actual rows=1 loops=1) Task Count: 1 @@ -306,8 +306,8 @@ EXPLAIN (COSTS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; Filter: (age = 20) (9 rows) -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; - QUERY PLAN +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; + QUERY PLAN --------------------------------------------------------------------- Custom Scan (Citus Adaptive) (actual rows=0 loops=1) Task Count: 1 diff --git a/src/test/regress/expected/multi_explain.out b/src/test/regress/expected/multi_explain.out index e67b2d6c6..6fc2e36a3 100644 --- a/src/test/regress/expected/multi_explain.out +++ b/src/test/regress/expected/multi_explain.out @@ -3053,7 +3053,7 @@ Custom Scan (Citus Adaptive) (actual rows=0 loops=1) Conflicting Tuples: 0 -> Seq Scan on users_table_2_570028 users_table_2 (actual rows=0 loops=1) -- simple test to confirm we can fetch long (>4KB) plans -EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF) SELECT * FROM users_table_2 WHERE value_1::text = '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000X'; +EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM users_table_2 WHERE value_1::text = '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000X'; Custom Scan (Citus Adaptive) (actual rows=0 loops=1) Task Count: 1 Tuple data received from nodes: 0 bytes diff --git a/src/test/regress/expected/multi_explain_0.out b/src/test/regress/expected/multi_explain_0.out index 8f2b412eb..5589f3d69 100644 --- a/src/test/regress/expected/multi_explain_0.out +++ b/src/test/regress/expected/multi_explain_0.out @@ -3042,7 +3042,7 @@ Custom Scan (Citus Adaptive) (actual rows=0 loops=1) Conflicting Tuples: 0 -> Seq Scan on users_table_2_570028 users_table_2 (actual rows=0 loops=1) -- simple test to confirm we can fetch long (>4KB) plans -EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF) SELECT * FROM users_table_2 WHERE value_1::text = '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000X'; +EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM users_table_2 WHERE value_1::text = '00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000X'; Custom Scan (Citus Adaptive) (actual rows=0 loops=1) Task Count: 1 Tuple data received from nodes: 0 bytes diff --git a/src/test/regress/sql/local_shard_execution.sql b/src/test/regress/sql/local_shard_execution.sql index 095b9a7bf..0ba2f9e38 100644 --- a/src/test/regress/sql/local_shard_execution.sql +++ b/src/test/regress/sql/local_shard_execution.sql @@ -218,7 +218,7 @@ SET citus.enable_binary_protocol = TRUE; -- though going through distributed execution EXPLAIN (COSTS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; EXPLAIN (ANALYZE ON, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) WITH r AS ( SELECT GREATEST(random(), 2) z,* FROM distributed_table) @@ -226,7 +226,7 @@ SELECT 1 FROM r WHERE z < 3; EXPLAIN (COSTS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; -- show that EXPLAIN ANALYZE deleted the row and cascades deletes SELECT * FROM distributed_table WHERE key = 1 AND age = 20 ORDER BY 1,2,3; SELECT * FROM second_distributed_table WHERE key = 1 ORDER BY 1,2; diff --git a/src/test/regress/sql/local_shard_execution_replicated.sql b/src/test/regress/sql/local_shard_execution_replicated.sql index 5b4343bdc..0740d58da 100644 --- a/src/test/regress/sql/local_shard_execution_replicated.sql +++ b/src/test/regress/sql/local_shard_execution_replicated.sql @@ -183,7 +183,7 @@ SET citus.enable_binary_protocol = TRUE; -- though going through distributed execution EXPLAIN (COSTS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT * FROM distributed_table WHERE key = 1 AND age = 20; EXPLAIN (ANALYZE ON, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) WITH r AS ( SELECT GREATEST(random(), 2) z,* FROM distributed_table) @@ -191,7 +191,7 @@ SELECT 1 FROM r WHERE z < 3; EXPLAIN (COSTS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; -EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; +EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) DELETE FROM distributed_table WHERE key = 1 AND age = 20; -- show that EXPLAIN ANALYZE deleted the row SELECT * FROM distributed_table WHERE key = 1 AND age = 20 ORDER BY 1,2,3; SELECT * FROM second_distributed_table WHERE key = 1 ORDER BY 1,2; diff --git a/src/test/regress/sql/multi_explain.sql b/src/test/regress/sql/multi_explain.sql index 9ebc3e4e7..365fda970 100644 --- a/src/test/regress/sql/multi_explain.sql +++ b/src/test/regress/sql/multi_explain.sql @@ -1099,7 +1099,7 @@ EXPLAIN :default_explain_flags execute p4(20,20); EXPLAIN :default_analyze_flags execute p4(20,20); -- simple test to confirm we can fetch long (>4KB) plans -EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF) SELECT * FROM users_table_2 WHERE value_1::text = 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+EXPLAIN (ANALYZE, COSTS OFF, TIMING OFF, SUMMARY OFF, BUFFERS OFF) SELECT * FROM users_table_2 WHERE value_1::text = 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DROP TABLE users_table_2;