.gitignore

@@ -1,2 +1,4 @@
 .DS_Store
 node_modules
+db
+myt.config.yml

assets/myt.default.yml

@@ -6,6 +6,11 @@ mockFunctions:
   - mockTime
   - mockUtcTime
 sumViews: true
+defaultDefiner: root@localhost
+deprecMarkRegex: __$
+deprecCommentRegex: ^@deprecated [0-9]{4}-[0-9]{2}-[0-9]{2}
+deprecDateRegex: '[0-9]{4}-[0-9]{2}-[0-9]{2}'
+deprecRetentionPeriod: 60 # Days
 privileges:
   userTable: global_priv
   userWhere: >-

myt-create.js

@@ -43,7 +43,7 @@ class Create extends Command {
         const params = {
             schema,
             name,
-            definer: 'root@localhost'
+            definer: opts.defaultDefiner
         };
 
         switch (opts.type) {

myt-version.js

@@ -1,6 +1,7 @@
 const Myt = require('./myt');
 const Command = require('./lib/command');
 const fs = require('fs-extra');
+const SqlString = require('sqlstring');
 
 /**
  * Creates a new version.
@@ -18,7 +19,7 @@ class Version extends Command {
     static opts = {
         alias: {
             name: 'n',
-            deprecate: 'kk'
+            deprecate: 'p'
         },
         string: [
             'name'
@@ -128,11 +129,14 @@ class Version extends Command {
             );
             await fs.mkdir(newVersionDir);
 
+            if (opts.deprecate) {
+                this.emit('deprecate');
+                await deprecate(conn, opts, newVersionDir);
+            } 
+            else
                 await fs.writeFile(
                     `${newVersionDir}/00-firstScript.sql`,
-                opts.deprecate
+                    '-- Place your SQL code here\n'
-                    ? (this.emit('deprecate'), await deprecate(conn))
-                    : '-- Place your SQL code here\n'
                 );
 
             this.emit('versionCreated', versionFolder);
@@ -147,67 +151,103 @@ class Version extends Command {
     }
 }
 
-async function deprecate(conn) {
+async function deprecate(conn, opts, newVersionDir) {
-    const [[config]] = await conn.query(`
+    const now = new Date();
-        SELECT dateRegex,
+    const minDeprecDate = new Date(now.getTime() - opts.deprecRetentionPeriod * 24 * 60 * 60 * 1000);    
-                deprecatedMarkRegex,
+    const deprecMarkRegex = opts.deprecMarkRegex;
-                VN_CURDATE() - INTERVAL daysKeepDeprecatedObjects DAY dated
+    const deprecCommentRegex = opts.deprecCommentRegex;
-            FROM config
+    const deprecDateRegex = opts.deprecDateRegex;
-    `);
+    const filePath = `${newVersionDir}/00-deprecate.sql`;
 
-    if (!config || Object.values(config).some(value => value == null || value === ''))
+    // Generate the drops of the primary keys
-        throw new Error('missing configuration variables');
+    const [primaryKeys] = await conn.query(`
-
+        SELECT c.TABLE_SCHEMA 'schema', c.TABLE_NAME 'table'
-    const [sql] = await conn.query(`
-        WITH variables AS (
-            SELECT ? markRegex, ? dateRegex, ? dated
-        )
-        SELECT CONCAT('ALTER TABLE ', c.TABLE_SCHEMA, '.', c.TABLE_NAME, ' DROP PRIMARY KEY;') "sql"
             FROM information_schema.COLUMNS c
                 LEFT JOIN information_schema.VIEWS v ON v.TABLE_SCHEMA = c.TABLE_SCHEMA
                     AND v.TABLE_NAME = c.TABLE_NAME
                 JOIN information_schema.STATISTICS s ON s.TABLE_SCHEMA = c.TABLE_SCHEMA
                     AND s.TABLE_NAME = c.TABLE_NAME
                     AND s.COLUMN_NAME = c.COLUMN_NAME
-                JOIN variables var
+            WHERE c.COLUMN_NAME REGEXP ? COLLATE utf8mb4_unicode_ci
-            WHERE c.COLUMN_NAME REGEXP var.markRegex COLLATE utf8mb4_unicode_ci
+                AND c.COLUMN_COMMENT REGEXP ? COLLATE utf8mb4_unicode_ci
-                AND REGEXP_SUBSTR(c.COLUMN_COMMENT, var.dateRegex COLLATE utf8mb4_unicode_ci) < var.dated
+                AND REGEXP_SUBSTR(c.COLUMN_COMMENT, ? COLLATE utf8mb4_unicode_ci) < ?
                 AND v.TABLE_NAME IS NULL
                 AND s.INDEX_NAME = 'PRIMARY'
-        UNION
+    `, [deprecMarkRegex, deprecCommentRegex, deprecDateRegex, minDeprecDate]);
-        SELECT CONCAT('ALTER TABLE ', c.TABLE_SCHEMA, '.', c.TABLE_NAME, ' DROP FOREIGN KEY ', kcu.CONSTRAINT_NAME, ';')
+
+    primaryKeys.map(async row => {
+        await fs.appendFile(
+            filePath,
+            'ALTER TABLE ' + SqlString.escapeId(row.schema, true) + '.' +
+                SqlString.escapeId(row.table, true) + ' DROP PRIMARY KEY;\n'
+        );
+    });
+
+    // Generate the drops of the foreign keys
+    const [foreignKeys] = await conn.query(`
+        SELECT c.TABLE_SCHEMA 'schema', c.TABLE_NAME 'table', kcu.CONSTRAINT_NAME 'constraint'
             FROM information_schema.COLUMNS c
                 LEFT JOIN information_schema.VIEWS v ON v.TABLE_SCHEMA = c.TABLE_SCHEMA
                     AND v.TABLE_NAME = c.TABLE_NAME
                 JOIN information_schema.KEY_COLUMN_USAGE kcu ON kcu.TABLE_SCHEMA = c.TABLE_SCHEMA
                     AND kcu.TABLE_NAME = c.TABLE_NAME
                     AND kcu.COLUMN_NAME = c.COLUMN_NAME
-                JOIN variables var
+            WHERE c.COLUMN_NAME REGEXP ? COLLATE utf8mb4_unicode_ci
-            WHERE c.COLUMN_NAME REGEXP var.markRegex COLLATE utf8mb4_unicode_ci
+                AND c.COLUMN_COMMENT REGEXP ? COLLATE utf8mb4_unicode_ci
-                AND REGEXP_SUBSTR(c.COLUMN_COMMENT, var.dateRegex COLLATE utf8mb4_unicode_ci) < var.dated
+                AND REGEXP_SUBSTR(c.COLUMN_COMMENT, ? COLLATE utf8mb4_unicode_ci) < ?
                 AND v.TABLE_NAME IS NULL
                 AND kcu.REFERENCED_COLUMN_NAME IS NOT NULL
-        UNION
+    `, [deprecMarkRegex, deprecCommentRegex, deprecDateRegex, minDeprecDate]);
-        SELECT CONCAT('ALTER TABLE ', c.TABLE_SCHEMA, '.', c.TABLE_NAME, ' DROP COLUMN ', c.COLUMN_NAME, ';')
+
+    foreignKeys.map(async row => {
+        await fs.appendFile(
+            filePath,
+            'ALTER TABLE ' + SqlString.escapeId(row.schema, true) + '.' + 
+                SqlString.escapeId(row.table, true) + ' DROP FOREIGN KEY ' + 
+                SqlString.escapeId(row.constraint, true) + ';\n'
+        );
+    });
+
+    // Generate the drops of the columns
+    const [columns] = await conn.query(`
+        SELECT c.TABLE_SCHEMA 'schema', c.TABLE_NAME 'table', c.COLUMN_NAME 'column'
             FROM information_schema.COLUMNS c
                 LEFT JOIN information_schema.VIEWS v ON v.TABLE_SCHEMA = c.TABLE_SCHEMA
                     AND v.TABLE_NAME = c.TABLE_NAME
                 LEFT JOIN information_schema.KEY_COLUMN_USAGE kcu ON kcu.TABLE_SCHEMA = c.TABLE_SCHEMA
                     AND kcu.TABLE_NAME = c.TABLE_NAME
                     AND kcu.COLUMN_NAME = c.COLUMN_NAME
-                JOIN variables var
+            WHERE c.COLUMN_NAME REGEXP ? COLLATE utf8mb4_unicode_ci
-            WHERE c.COLUMN_NAME REGEXP var.markRegex COLLATE utf8mb4_unicode_ci
+                AND c.COLUMN_COMMENT REGEXP ? COLLATE utf8mb4_unicode_ci
-                AND REGEXP_SUBSTR(c.COLUMN_COMMENT, var.dateRegex COLLATE utf8mb4_unicode_ci) < var.dated
+                AND REGEXP_SUBSTR(c.COLUMN_COMMENT, ? COLLATE utf8mb4_unicode_ci) <?
                 AND v.TABLE_NAME IS NULL
-        UNION
+    `, [deprecMarkRegex, deprecCommentRegex, deprecDateRegex, minDeprecDate]);
-        SELECT CONCAT('DROP TABLE ', t.TABLE_SCHEMA, '.', t.TABLE_NAME, ';')
-            FROM information_schema.TABLES t
-                JOIN variables var
-            WHERE t.TABLE_NAME REGEXP var.markRegex COLLATE utf8mb4_unicode_ci
-                AND REGEXP_SUBSTR(t.TABLE_COMMENT, var.dateRegex COLLATE utf8mb4_unicode_ci) < var.dated
-    `, [config.deprecatedMarkRegex, config.dateRegex, config.dated]);
 
-    return sql.map(row => row.sql).join('\n');
+    columns.map(async row => {
+        await fs.appendFile(
+            filePath,
+            'ALTER TABLE ' + SqlString.escapeId(row.schema, true) + '.' + 
+                SqlString.escapeId(row.table, true) + ' DROP COLUMN ' + 
+                SqlString.escapeId(row.column, true) + ';\n'
+        );
+    });
+
+    // Generate the drops of the tables
+    const [tables] = await conn.query(`
+        SELECT TABLE_SCHEMA 'schema', TABLE_NAME 'table'
+            FROM information_schema.TABLES
+            WHERE TABLE_NAME REGEXP ? COLLATE utf8mb4_unicode_ci
+                AND TABLE_COMMENT REGEXP ? COLLATE utf8mb4_unicode_ci
+                AND REGEXP_SUBSTR(TABLE_COMMENT, ? COLLATE utf8mb4_unicode_ci) < ?
+    `, [deprecMarkRegex, deprecCommentRegex, deprecDateRegex, minDeprecDate]);
+
+    tables.map(async row => {
+        await fs.appendFile(
+            filePath,
+            'DROP TABLE ' + SqlString.escapeId(row.schema, true) + '.' + 
+                SqlString.escapeId(row.table, true) + ';\n'
+        );
+    });
 }
 
 function randomName() {