Since the Groups table is now named Groups with back ticks, it is now case-sensitive. Since it is now case-sensitive it needs to be in all caps, so when other SQL statements call on this table using the Groups without backticks it will be compatible. When Groups is used in a statement without back ticks or quotes it automatically gets converted into capital letters.

src/main/java/org/qortal/repository/hsqldb/HSQLDBDatabaseUpdates.java

@@ -454,41 +454,41 @@ public class HSQLDBDatabaseUpdates {
 
 				case 12:
 					// Groups
-					// NOTE: We need to set Groups to `Groups` here to avoid SQL Standard Keywords in HSQLDB v2.7.4
-					stmt.execute("CREATE TABLE `Groups` (group_id GroupID, owner QortalAddress NOT NULL, group_name GroupName NOT NULL, "
+					// NOTE: We need to set Groups to `GROUPS` here to avoid SQL Standard Keywords in HSQLDB v2.7.4
+					stmt.execute("CREATE TABLE `GROUPS` (group_id GroupID, owner QortalAddress NOT NULL, group_name GroupName NOT NULL, "
 							+ "created_when EpochMillis NOT NULL, updated_when EpochMillis, is_open BOOLEAN NOT NULL, "
 							+ "approval_threshold TINYINT NOT NULL, min_block_delay INTEGER NOT NULL, max_block_delay INTEGER NOT NULL, "
 							+ "reference Signature, creation_group_id GroupID, reduced_group_name GroupName NOT NULL, "
 							+ "description GenericDescription NOT NULL, PRIMARY KEY (group_id))");
 					// For finding groups by name
-					stmt.execute("CREATE INDEX GroupNameIndex on `Groups` (group_name)");
+					stmt.execute("CREATE INDEX GroupNameIndex on `GROUPS` (group_name)");
 					// For finding groups by reduced name
-					stmt.execute("CREATE INDEX GroupReducedNameIndex on `Groups` (reduced_group_name)");
+					stmt.execute("CREATE INDEX GroupReducedNameIndex on `GROUPS` (reduced_group_name)");
 					// For finding groups by owner
-					stmt.execute("CREATE INDEX GroupOwnerIndex ON `Groups` (owner)");
+					stmt.execute("CREATE INDEX GroupOwnerIndex ON `GROUPS` (owner)");
 
 					// We need a corresponding trigger to make sure new group_id values are assigned sequentially starting from 1
-					stmt.execute("CREATE TRIGGER Group_ID_Trigger BEFORE INSERT ON `Groups` "
+					stmt.execute("CREATE TRIGGER Group_ID_Trigger BEFORE INSERT ON `GROUPS` "
 							+ "REFERENCING NEW ROW AS new_row FOR EACH ROW WHEN (new_row.group_id IS NULL) "
-							+ "SET new_row.group_id = (SELECT IFNULL(MAX(group_id) + 1, 1) FROM `Groups`)");
+							+ "SET new_row.group_id = (SELECT IFNULL(MAX(group_id) + 1, 1) FROM `GROUPS`)");
 
 					// Admins
 					stmt.execute("CREATE TABLE GroupAdmins (group_id GroupID, admin QortalAddress, reference Signature NOT NULL, "
-							+ "PRIMARY KEY (group_id, admin), FOREIGN KEY (group_id) REFERENCES `Groups` (group_id) ON DELETE CASCADE)");
+							+ "PRIMARY KEY (group_id, admin), FOREIGN KEY (group_id) REFERENCES `GROUPS` (group_id) ON DELETE CASCADE)");
 					// For finding groups by admin address
 					stmt.execute("CREATE INDEX GroupAdminIndex ON GroupAdmins (admin)");
 
 					// Members
 					stmt.execute("CREATE TABLE GroupMembers (group_id GroupID, address QortalAddress, "
 							+ "joined_when EpochMillis NOT NULL, reference Signature NOT NULL, "
-							+ "PRIMARY KEY (group_id, address), FOREIGN KEY (group_id) REFERENCES `Groups` (group_id) ON DELETE CASCADE)");
+							+ "PRIMARY KEY (group_id, address), FOREIGN KEY (group_id) REFERENCES `GROUPS` (group_id) ON DELETE CASCADE)");
 					// For finding groups by member address
 					stmt.execute("CREATE INDEX GroupMemberIndex ON GroupMembers (address)");
 
 					// Invites
 					stmt.execute("CREATE TABLE GroupInvites (group_id GroupID, inviter QortalAddress, invitee QortalAddress, "
 							+ "expires_when EpochMillis, reference Signature, "
-							+ "PRIMARY KEY (group_id, invitee), FOREIGN KEY (group_id) REFERENCES `Groups` (group_id) ON DELETE CASCADE)");
+							+ "PRIMARY KEY (group_id, invitee), FOREIGN KEY (group_id) REFERENCES `GROUPS` (group_id) ON DELETE CASCADE)");
 					// For finding invites sent by inviter
 					stmt.execute("CREATE INDEX GroupInviteInviterIndex ON GroupInvites (inviter)");
 					// For finding invites by group
@@ -504,7 +504,7 @@ public class HSQLDBDatabaseUpdates {
 					// NULL expires_when means does not expire!
 					stmt.execute("CREATE TABLE GroupBans (group_id GroupID, offender QortalAddress, admin QortalAddress NOT NULL, "
 							+ "banned_when EpochMillis NOT NULL, reason GenericDescription NOT NULL, expires_when EpochMillis, reference Signature NOT NULL, "
-							+ "PRIMARY KEY (group_id, offender), FOREIGN KEY (group_id) REFERENCES `Groups` (group_id) ON DELETE CASCADE)");
+							+ "PRIMARY KEY (group_id, offender), FOREIGN KEY (group_id) REFERENCES `GROUPS` (group_id) ON DELETE CASCADE)");
 					// For expiry maintenance
 					stmt.execute("CREATE INDEX GroupBanExpiryIndex ON GroupBans (expires_when)");
 					break;