From e513895060d1f5cf6d3195bcbde5d8a2abf710d1 Mon Sep 17 00:00:00 2001
From: Konuch <SK040157@main.intgin.net>
Date: Tue, 17 Mar 2020 21:19:20 +0100
Subject: [PATCH] Export MySQL and MariaDB column comments.

---
 src/drivers/MysqlDriver.ts | 4 +++-
 src/models/Column.ts       | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/drivers/MysqlDriver.ts b/src/drivers/MysqlDriver.ts
index a21df74..07b8d88 100644
--- a/src/drivers/MysqlDriver.ts
+++ b/src/drivers/MysqlDriver.ts
@@ -78,9 +78,10 @@ export default class MysqlDriver extends AbstractDriver {
             IsIdentity: number;
             COLUMN_TYPE: string;
             COLUMN_KEY: string;
+            COLUMN_COMMENT: string;
         }>(`SELECT TABLE_NAME,COLUMN_NAME,COLUMN_DEFAULT,IS_NULLABLE,
             DATA_TYPE,CHARACTER_MAXIMUM_LENGTH,NUMERIC_PRECISION,NUMERIC_SCALE,
-            CASE WHEN EXTRA like '%auto_increment%' THEN 1 ELSE 0 END IsIdentity, COLUMN_TYPE, COLUMN_KEY
+            CASE WHEN EXTRA like '%auto_increment%' THEN 1 ELSE 0 END IsIdentity, COLUMN_TYPE, COLUMN_KEY, COLUMN_COMMENT
             FROM INFORMATION_SCHEMA.COLUMNS where TABLE_SCHEMA IN (${MysqlDriver.escapeCommaSeparatedList(
                 dbNames
             )})
@@ -102,6 +103,7 @@ export default class MysqlDriver extends AbstractDriver {
                     let columnType = resp.DATA_TYPE;
                     if (resp.IS_NULLABLE === "YES") options.nullable = true;
                     if (resp.COLUMN_KEY === "UNI") options.unique = true;
+                    if (resp.COLUMN_COMMENT) options.comment = resp.COLUMN_COMMENT;
                     if (resp.COLUMN_TYPE.endsWith(" unsigned"))
                         options.unsigned = true;
                     switch (resp.DATA_TYPE) {
diff --git a/src/models/Column.ts b/src/models/Column.ts
index f62271e..cc1e1f6 100644
--- a/src/models/Column.ts
+++ b/src/models/Column.ts
@@ -21,5 +21,6 @@ export type Column = {
         unsigned?: boolean;
         enum?: string[];
         array?: boolean; // ?
+        comment?: string;
     };
 };