Changed database structure from default UTC_TIMESTAMP() which are not supposed to be supported to triggers

update transaction database method

database/migrations/m0.sql

@@ -18,7 +18,7 @@ CREATE TABLE IF NOT EXISTS accounts (
     `nick` VARCHAR(256),
     `type` INTEGER UNSIGNED NOT NULL,
     `password` VARCHAR(128),
-    `created` TIMESTAMP DEFAULT UTC_TIMESTAMP()
+    `created` TIMESTAMP
 );
 
 --creating role bindings table
@@ -31,12 +31,12 @@ CREATE TABLE IF NOT EXISTS roleBindings (
     FOREIGN KEY (role) REFERENCES roles(id)
 );
 
---creating sessings table
+--creating sessions table
 CREATE TABLE IF NOT EXISTS sessions (
     `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
     `owner` INTEGER UNSIGNED NOT NULL,
-    `started` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
-    `latest` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
+    `started` TIMESTAMP,
+    `latest` TIMESTAMP,
     `access` CHAR(32) NOT NULL UNIQUE,
     `renew` CHAR(32),
     `persist` BOOLEAN NOT NULL,
@@ -51,7 +51,7 @@ CREATE TABLE IF NOT EXISTS currencies (
     `code` VARCHAR(16) NOT NULL UNIQUE,
     `title` VARCHAR(256),
     `manual` BOOLEAN NOT NULL,
-    `added` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
+    `created` TIMESTAMP,
     `type` INTEGER UNSIGNED NOT NULL,
     `value` DECIMAL (20, 5) NOT NULL,
     `source` TEXT,
@@ -61,7 +61,7 @@ CREATE TABLE IF NOT EXISTS currencies (
     INDEX manual_idx (manual)
 );
 
---creating assests table
+--creating assets table
 CREATE TABLE IF NOT EXISTS assets (
     `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
     `owner` INTEGER UNSIGNED NOT NULL,
@@ -72,7 +72,7 @@ CREATE TABLE IF NOT EXISTS assets (
     `balance` DECIMAL (20, 5) DEFAULT 0,
     `type` INTEGER UNSIGNED NOT NULL,
     `archived` BOOLEAN DEFAULT FALSE,
-    `created` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
+    `created` TIMESTAMP,
 
     INDEX owner_idx (owner),
     INDEX archived_idx (archived),
@@ -96,8 +96,8 @@ CREATE TABLE IF NOT EXISTS transactions (
     `parent` INTEGER UNSIGNED,
     `value` DECIMAL (20, 5) NOT NULL,
     `state` INTEGER UNSIGNED DEFAULT 0,
-    `modified` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
-    `performed` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
+    `modified` TIMESTAMP,
+    `performed` TIMESTAMP,
     `party` INTEGER UNSIGNED,
     `notes` TEXT,
 
@@ -114,7 +114,63 @@ CREATE TABLE IF NOT EXISTS transactions (
     FOREIGN KEY (party) REFERENCES parties(id)
 );
 
---creating defailt roles
+--creating trigger before insert accounts
+CREATE TRIGGER before_insert_accounts
+BEFORE INSERT ON accounts
+FOR EACH ROW
+BEGIN
+    SET NEW.created = UTC_TIMESTAMP();
+END;
+
+--creating trigger before  insert sessions
+CREATE TRIGGER before_insert_sessions
+BEFORE INSERT ON sessions
+FOR EACH ROW
+BEGIN
+    SET NEW.started = UTC_TIMESTAMP();
+    SET NEW.latest = UTC_TIMESTAMP();
+END;
+
+--creating trigger before insert currencies
+CREATE TRIGGER before_insert_currencies
+BEFORE INSERT ON currencies
+FOR EACH ROW
+BEGIN
+    IF NEW.created IS NULL THEN
+        SET NEW.created = UTC_TIMESTAMP();
+    END IF;
+END;
+
+--creating trigger before insert assets
+CREATE TRIGGER before_insert_assets
+BEFORE INSERT ON assets
+FOR EACH ROW
+BEGIN
+    IF NEW.created IS NULL THEN
+        SET NEW.created = UTC_TIMESTAMP();
+    END IF;
+END;
+
+--creating trigger before insert transactions
+CREATE TRIGGER before_insert_transactions
+BEFORE INSERT ON transactions
+FOR EACH ROW
+BEGIN
+    SET NEW.modified = UTC_TIMESTAMP();
+    IF NEW.performed IS NULL THEN
+        SET NEW.performed = UTC_TIMESTAMP();
+    END IF;
+END;
+
+--creating trigger before update transactions
+CREATE TRIGGER before_update_transactions
+BEFORE UPDATE ON transactions
+FOR EACH ROW
+BEGIN
+    SET NEW.modified = UTC_TIMESTAMP();
+END;
+
+--creating default roles
 INSERT IGNORE INTO
 roles  (`name`)
 VALUES ('root'),