add custom mysql rename for version below 8

src/connections/mysql.ts

@@ -265,8 +265,73 @@ export class MySQLConnection extends SqlConnection {
         });
     }
 
+    async renameColumn(
+        schemaName: string | undefined,
+        tableName: string,
+        columnName: string,
+        newColumnName: string
+    ): Promise<void> {
+        // Check the MySQL version
+        const { data: version } = await this.query<{ version: string }>({
+            query: 'SELECT VERSION() AS version',
+        });
+
+        const fullTableName = this.dialect.escapeId(
+            schemaName ? `${schemaName}.${tableName}` : tableName
+        );
+
+        const versionNumber = parseInt(version[0].version.split('.')[0]);
+        if (versionNumber < 8) {
+            // We cannot rename column in MySQL version less than 8 using RENAME COLUMN
+            // We need to get the CREATE SCRIPT of the table
+            const { data: createTableResponse } = await this.query<{
+                Create_Table: string;
+            }>({
+                query: `SHOW CREATE TABLE ${fullTableName}`,
+            });
+
+            // Cannot rename column if the table does not exist
+            if (createTableResponse.length === 0) return;
+
+            // Get the line of the column
+            const createTable = createTableResponse[0].Create_Table;
+            const lists = createTable.split('\n');
+            const columnLine = lists.find((line) =>
+                line
+                    .trim()
+                    .toLowerCase()
+                    .startsWith(this.dialect.escapeId(columnName).toLowerCase())
+            );
+
+            if (!columnLine) return;
+            const [columnNamePart, ...columnDefinitions] =
+                columnLine.split(' ');
+
+            const query = `ALTER TABLE ${fullTableName} CHANGE ${columnNamePart} ${this.dialect.escapeId(newColumnName)} ${columnDefinitions.join(' ')}`;
+            await this.query({ query });
+        }
+
+        return super.renameColumn(
+            schemaName,
+            tableName,
+            columnName,
+            newColumnName
+        );
+    }
+
     async connect(): Promise<any> {}
     async disconnect(): Promise<any> {
         this.conn.destroy();
     }
 }
+
+/*
+CREATE TABLE `album` (
+  `AlbumId` int NOT NULL,
+  `Title` varchar(160) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NOT NULL,
+  `ArtistId` int NOT NULL,
+  PRIMARY KEY (`AlbumId`),
+  KEY `IFK_AlbumArtistId` (`ArtistId`),
+  CONSTRAINT `FK_AlbumArtistId` FOREIGN KEY (`ArtistId`) REFERENCES `artist` (`ArtistId`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
+*/