From ee7198a9137cfcd720efc974a41c7a420ae891af Mon Sep 17 00:00:00 2001
From: Jan Prochazka <jan.prochazka@gmail.com>
Date: Thu, 2 Jun 2022 12:02:54 +0200
Subject: [PATCH] analyse mysql views optimalization #273

---
 .../src/backend/Analyser.js                   | 22 ++++++++++++-------
 .../src/backend/sql/index.js                  |  2 ++
 .../src/backend/sql/viewTexts.js              |  7 ++++++
 3 files changed, 23 insertions(+), 8 deletions(-)
 create mode 100644 plugins/dbgate-plugin-mysql/src/backend/sql/viewTexts.js

diff --git a/plugins/dbgate-plugin-mysql/src/backend/Analyser.js b/plugins/dbgate-plugin-mysql/src/backend/Analyser.js
index a09e5a04..f0f8edae 100644
--- a/plugins/dbgate-plugin-mysql/src/backend/Analyser.js
+++ b/plugins/dbgate-plugin-mysql/src/backend/Analyser.js
@@ -56,15 +56,21 @@ class Analyser extends DatabaseAnalyser {
 
   async getViewTexts(allViewNames) {
     const res = {};
-    for (const viewName of this.getRequestedViewNames(allViewNames)) {
-      try {
-        const resp = await this.driver.query(this.pool, `SHOW CREATE VIEW \`${viewName}\``);
-        res[viewName] = resp.rows[0]['Create View'];
-      } catch (err) {
-        console.log('ERROR', err);
-        res[viewName] = `${err}`;
-      }
+
+    const views = await this.safeQuery(this.createQuery('viewTexts', ['views']));
+    for (const view of views.rows) {
+      res[view.pureName] = `CREATE VIEW \`${view.pureName}\` AS ${view.viewDefinition}`;
     }
+
+    // for (const viewName of this.getRequestedViewNames(allViewNames)) {
+    //   try {
+    //     const resp = await this.driver.query(this.pool, `SHOW CREATE VIEW \`${viewName}\``);
+    //     res[viewName] = resp.rows[0]['Create View'];
+    //   } catch (err) {
+    //     console.log('ERROR', err);
+    //     res[viewName] = `${err}`;
+    //   }
+    // }
     return res;
   }
 
diff --git a/plugins/dbgate-plugin-mysql/src/backend/sql/index.js b/plugins/dbgate-plugin-mysql/src/backend/sql/index.js
index 37771370..4839071e 100644
--- a/plugins/dbgate-plugin-mysql/src/backend/sql/index.js
+++ b/plugins/dbgate-plugin-mysql/src/backend/sql/index.js
@@ -9,6 +9,7 @@ const programmables = require('./programmables');
 const procedureModifications = require('./procedureModifications');
 const functionModifications = require('./functionModifications');
 const uniqueNames = require('./uniqueNames');
+const viewTexts = require('./viewTexts');
 
 module.exports = {
   columns,
@@ -22,4 +23,5 @@ module.exports = {
   functionModifications,
   indexes,
   uniqueNames,
+  viewTexts,
 };
diff --git a/plugins/dbgate-plugin-mysql/src/backend/sql/viewTexts.js b/plugins/dbgate-plugin-mysql/src/backend/sql/viewTexts.js
new file mode 100644
index 00000000..a62be5ea
--- /dev/null
+++ b/plugins/dbgate-plugin-mysql/src/backend/sql/viewTexts.js
@@ -0,0 +1,7 @@
+module.exports = `
+select 
+	TABLE_NAME as pureName, 
+    VIEW_DEFINITION as viewDefinition
+from information_schema.views 
+where TABLE_SCHEMA = '#DATABASE#' and TABLE_NAME =OBJECT_ID_CONDITION;
+`;