MDEV-17363 - Compressed columns cannot be restored from dump

In collaboration with Sergey Vojtovich <svoj@mariadb.org>

The COMPRESSED clause is now a part of the data type and goes immediately
after the data type and length, but before the CHARACTER SET clause,
and before column attributes such as DEFAULT, COLLATE, ON UPDATE,
SYSTEM VERSIONING, engine specific column attributes.

In the old reduction, the COMPRESSED clause was a column attribute.

New syntax:
  <varchar or text data type> <length> <compression> <character set> <column attributes>
  <varbinary or blob data type> <length> <compression> <column attributes>

New syntax examples:
  VARCHAR(1000) COMPRESSED CHARACTER SET latin1 DEFAULT ''
  BLOB COMPRESSED DEFAULT ''

Deprecate syntax examples:
  VARCHAR(1000) CHARACTER SET latin1 COMPRESSED DEFAULT ''
  TEXT          CHARACTER SET latin1 DEFAULT '' COMPRESSED
  VARBINARY(1000) DEFAULT '' COMPRESSED

As a side effect:
- COMPRESSED is not valid as an SP label name in SQL/PSM routines any more
  (but it's still valid as an SP label name in sql_mode=ORACLE)

- COMPRESSED is now allowed in combination with GENERATED ALWAYS AS:

  TEXT COMPRESSED GENERATED ALWAYS AS REPEAT('a',1000)

mysql-test/main/column_compression.test

@@ -20,7 +20,7 @@ let $typec= VARCHAR(10000) COMPRESSED;
 let $typeu= VARCHAR(10000);
 --source column_compression.inc
 
-let $typec= TEXT CHARSET ucs2 COMPRESSED;
+let $typec= TEXT COMPRESSED CHARSET ucs2;
 let $typeu= TEXT;
 --source column_compression.inc
 
@@ -29,21 +29,25 @@ let $typec= BLOB COMPRESSED;
 let $typeu= BLOB;
 --source column_compression.inc
 
---error ER_WRONG_FIELD_SPEC
+--error ER_PARSE_ERROR
 CREATE TABLE t1(a CHAR(100) COMPRESSED);
 --error ER_WRONG_FIELD_SPEC
+CREATE TABLE t1(a CHAR(100) NOT NULL COMPRESSED);
+--error ER_PARSE_ERROR
 CREATE TABLE t1(a INT COMPRESSED);
 --error ER_UNKNOWN_COMPRESSION_METHOD
 CREATE TABLE t1(a BLOB COMPRESSED=unknown);
+--error ER_PARSE_ERROR
 CREATE TABLE t1(a BLOB COMPRESSED COMPRESSED);
-DROP TABLE t1;
 CREATE TABLE t1(a INT);
---error ER_WRONG_FIELD_SPEC
+--error ER_PARSE_ERROR
 ALTER TABLE t1 MODIFY a INT COMPRESSED;
+--error ER_WRONG_FIELD_SPEC
+ALTER TABLE t1 MODIFY a INT NOT NULL COMPRESSED;
 DROP TABLE t1;
 
 --echo # Test CSV
-CREATE TABLE t1(a BLOB NOT NULL COMPRESSED) ENGINE=CSV;
+CREATE TABLE t1(a BLOB COMPRESSED NOT NULL) ENGINE=CSV;
 INSERT INTO t1 VALUES(REPEAT('a', 110));
 SELECT LENGTH(a) FROM t1;
 ALTER TABLE t1 ENGINE=MyISAM;
@@ -153,8 +157,8 @@ DROP TABLE t1;
 
 CREATE TABLE t1
 (
-  a VARCHAR(10) CHARACTER SET latin1 COMPRESSED,
-  b VARCHAR(10) CHARACTER SET utf8 COMPRESSED
+  a VARCHAR(10) COMPRESSED CHARACTER SET latin1,
+  b VARCHAR(10) COMPRESSED CHARACTER SET utf8
 );
 SELECT COLUMN_NAME, CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH
 FROM INFORMATION_SCHEMA.COLUMNS
@@ -176,8 +180,78 @@ DROP TABLE t1;
 --echo # MDEV-16729 VARCHAR COMPRESSED is created with a wrong length for multi-byte character sets
 --echo #
 
-CREATE OR REPLACE TABLE t1 (a VARCHAR(1000) CHARACTER SET utf8 COMPRESSED);
+CREATE OR REPLACE TABLE t1 (a VARCHAR(1000) COMPRESSED CHARACTER SET utf8);
 SHOW CREATE TABLE t1;
 SELECT COLUMN_TYPE FROM INFORMATION_SCHEMA.COLUMNS
 WHERE TABLE_SCHEMA='test' AND TABLE_NAME='t1';
 DROP TABLE t1;
+
+
+--echo #
+--echo # MDEV-17363 - Compressed columns cannot be restored from dump
+--echo #
+--error ER_WRONG_FIELD_SPEC
+CREATE TABLE t1(a INT NOT NULL COMPRESSED);
+SHOW WARNINGS;
+
+CREATE TABLE t1(
+  a JSON COMPRESSED,
+  b VARCHAR(1000) COMPRESSED BINARY,
+  c NVARCHAR(1000) COMPRESSED BINARY,
+  d TINYTEXT COMPRESSED BINARY
+);
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
+
+--echo #
+--echo # VARCHAR and TEXT variants
+--echo #
+
+--let type=VARCHAR(10)
+--source include/column_compression_syntax_varchar.inc
+
+--let type=TINYTEXT
+--source include/column_compression_syntax_varchar.inc
+
+--let type=TEXT
+--source include/column_compression_syntax_varchar.inc
+
+--let type=MEDIUMTEXT
+--source include/column_compression_syntax_varchar.inc
+
+--let type=LONGTEXT
+--source include/column_compression_syntax_varchar.inc
+
+
+--echo #
+--echo # VARBINARY and BLOB variables
+--echo #
+
+--let type=VARCHAR(10)
+--source include/column_compression_syntax_varbinary.inc
+
+--let type=TINYBLOB
+--source include/column_compression_syntax_varbinary.inc
+
+--let type=BLOB
+--source include/column_compression_syntax_varbinary.inc
+
+--let type=MEDIUMBLOB
+--source include/column_compression_syntax_varbinary.inc
+
+--let type=LONGBLOB
+--source include/column_compression_syntax_varbinary.inc
+
+
+--echo #
+--echo # NVARCHAR
+--echo #
+
+CREATE TABLE t1 (a NVARCHAR(10) COMPRESSED);
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+--error ER_PARSE_ERROR
+CREATE TABLE t1 (a NVARCHAR(10) COMPRESSED BINARY COMPRESSED);
+--error ER_PARSE_ERROR
+CREATE TABLE t1 (a NVARCHAR(10) COMPRESSED DEFAULT '' COMPRESSED);