feat(snowflake-driver): add ignore case statements flag

docs/pages/product/configuration/data-sources/snowflake.mdx

@@ -12,6 +12,12 @@ redirect_from:
 - [The region][snowflake-docs-regions] for the [Snowflake][snowflake] warehouse
 - The username/password for the [Snowflake][snowflake] account
 
+## Snowflake quoted identifiers 
+
+Due to an issue in snowflakes opinion about quoted identifers we set a session value to override 
+snowflake defaults for users that have set an account value for: QUOTED_IDENTIFIERS_IGNORE_CASE
+you can learn more about this here: https://docs.snowflake.com/en/sql-reference/identifiers-syntax#double-quoted-identifiers
+
 ## Setup
 
 <WarningBox>

packages/cubejs-backend-shared/src/env.ts

@@ -1478,6 +1478,39 @@ const variables: Record<string, (...args: any) => any> = {
     ]
   ),
 
+  /**
+   * Snowflake case sensitivity for identifiers (like database columns).
+   */
+  snowflakeQuotedIdentIgnoreCase: ({
+    dataSource
+  }: {
+    dataSource: string,
+  }) => {
+    const val = process.env[
+      keyByDataSource(
+        'CUBEJS_DB_SNOWFLAKE_QUOTED_IDENTIFIERS_IGNORE_CASE',
+        dataSource,
+      )
+    ];
+    if (val) {
+      if (val.toLocaleLowerCase() === 'true') {
+        return true;
+      } else if (val.toLowerCase() === 'false') {
+        return false;
+      } else {
+        throw new TypeError(
+          `The ${
+            keyByDataSource(
+              'CUBEJS_DB_SNOWFLAKE_QUOTED_IDENTIFIERS_IGNORE_CASE',
+              dataSource,
+            )
+          } must be either 'true' or 'false'.`
+        );
+      }
+    } else {
+      return true;
+    }
+  },
   /** ****************************************************************
    * Presto Driver                                                   *
    ***************************************************************** */

packages/cubejs-snowflake-driver/src/SnowflakeDriver.ts

@@ -173,6 +173,7 @@
   resultPrefetch?: number,
   exportBucket?: SnowflakeDriverExportBucket,
   executionTimeout?: number,
+  caseSensitiveIdentifiers?: boolean,
   application: string,
   readOnly?: boolean,
 
@@ -213,6 +214,7 @@
       'CUBEJS_DB_SNOWFLAKE_PRIVATE_KEY_PATH',
       'CUBEJS_DB_SNOWFLAKE_PRIVATE_KEY_PASS',
       'CUBEJS_DB_SNOWFLAKE_OAUTH_TOKEN_PATH',
+      'CUBEJS_DB_SNOWFLAKE_QUOTED_IDENTIFIERS_IGNORE_CASE',
     ];
   }
 
@@ -279,6 +281,7 @@
       exportBucket: this.getExportBucket(dataSource),
       resultPrefetch: 1,
       executionTimeout: getEnv('dbQueryTimeout', { dataSource }),
+      ignoreCase: getEnv('snowflakeQuotedIdentIgnoreCase', { dataSource }),
       exportBucketCsvEscapeSymbol: getEnv('dbExportBucketCsvEscapeSymbol', { dataSource }),
       application: 'CubeDev_Cube',
       ...config
@@ -450,7 +453,12 @@
 
       await this.execute(connection, 'ALTER SESSION SET TIMEZONE = \'UTC\'', [], false);
       await this.execute(connection, `ALTER SESSION SET STATEMENT_TIMEOUT_IN_SECONDS = ${this.config.executionTimeout}`, [], false);
-
+
+      // We only want to ignore the case if someone sets the value to false explicitly since the default assumption
+      // is that casing matters
+      if (!this.ignoreCase) {
+        await this.execute(connection, 'ALTER SESSION SET QUOTED_IDENTIFIERS_IGNORE_CASE = FALSE', [], false);
+      }
       return connection;
     } catch (e) {
       this.connection = null;