# name: test/sql/attach/attach_new_compression.test # description: Tests attaching database files and using new compression methods # group: [attach] statement ok PRAGMA enable_verification statement ok ATTACH '__TEST_DIR__/test_new_compression.db' AS db1 (STORAGE_VERSION 'v1.0.0'); statement ok SET force_compression='roaring' statement ok CREATE TABLE db1.tbl AS SELECT CASE WHEN i%2=0 THEN NULL ELSE i END i FROM range(10000) t(i); statement ok SET force_compression='zstd'; statement ok CREATE TABLE db1.str_tbl AS SELECT STRING_AGG('long_string_' || i, '-') FROM range(1000) t(i); # verify new compression methods are not used when attaching with a low storage version query I SELECT COUNT(*)>0 FROM pragma_storage_info('db1.tbl') WHERE compression='Roaring' ---- false query I SELECT COUNT(*)>0 FROM pragma_storage_info('db1.str_tbl') WHERE compression='ZSTD' ---- false statement ok DETACH db1 # attach with a new storage version and re-write the table statement ok ATTACH '__TEST_DIR__/test_new_compression.db' AS db1 (STORAGE_VERSION 'v1.2.0'); statement ok SET force_compression='roaring' statement ok CREATE TABLE db1.tbl2 AS FROM db1.tbl statement ok CHECKPOINT db1 statement ok SET force_compression='zstd'; statement ok CREATE TABLE db1.str_tbl2 AS FROM db1.str_tbl statement ok CHECKPOINT db1 # roaring is used now query I SELECT COUNT(*)>0 FROM pragma_storage_info('db1.tbl2') WHERE compression='Roaring' ---- true query I SELECT COUNT(*)>0 FROM pragma_storage_info('db1.str_tbl2') WHERE compression='ZSTD' ---- true