feat: extension, triggers, functions, comments, parameters management in sql-tools (#17269)

feat: sql-tools extension, triggers, functions, comments, parameters

server/src/sql-tools/diff/comparers/index.comparer.ts

@@ -0,0 +1,46 @@
+import { haveEqualColumns } from 'src/sql-tools/helpers';
+import { Comparer, DatabaseIndex, Reason } from 'src/sql-tools/types';
+
+export const compareIndexes: Comparer<DatabaseIndex> = {
+  onMissing: (source) => [
+    {
+      type: 'index.create',
+      index: source,
+      reason: Reason.MissingInTarget,
+    },
+  ],
+  onExtra: (target) => [
+    {
+      type: 'index.drop',
+      indexName: target.name,
+      reason: Reason.MissingInSource,
+    },
+  ],
+  onCompare: (source, target) => {
+    const sourceUsing = source.using ?? 'btree';
+    const targetUsing = target.using ?? 'btree';
+
+    let reason = '';
+
+    if (!haveEqualColumns(source.columnNames, target.columnNames)) {
+      reason = `columns are different (${source.columnNames} vs ${target.columnNames})`;
+    } else if (source.unique !== target.unique) {
+      reason = `uniqueness is different (${source.unique} vs ${target.unique})`;
+    } else if (sourceUsing !== targetUsing) {
+      reason = `using method is different (${source.using} vs ${target.using})`;
+    } else if (source.where !== target.where) {
+      reason = `where clause is different (${source.where} vs ${target.where})`;
+    } else if (source.expression !== target.expression) {
+      reason = `expression is different (${source.expression} vs ${target.expression})`;
+    }
+
+    if (reason) {
+      return [
+        { type: 'index.drop', indexName: target.name, reason },
+        { type: 'index.create', index: source, reason },
+      ];
+    }
+
+    return [];
+  },
+};