added support for >, <, >=, <= operators

Author: ariflogs

README.md

@@ -69,11 +69,11 @@ console.log(resp);
   - [ ] MAX
 - [ ] Operators
   - [x] =
-  - [ ] !=
-  - [ ] >
-  - [ ] <
-  - [ ] > =
-  - [ ] <=
+  - [x] !=
+  - [x] >
+  - [x] <
+  - [x] >=
+  - [x] <=
   - [ ] AND
   - [ ] OR
   - [ ] NOT

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sql-to-nosql",
-  "version": "0.1.0",
+  "version": "0.1.01",
   "description": "Run SQL quries on your Mongodb database.",
   "publishConfig": {
     "registry": "https://www.npmjs.com/package/sql-to-nosql"

src/config/mapping.mts

@@ -1,12 +1,13 @@
 export const sqlToMongoDBcommandsMapping = {
-  select: "find",
+  select: "find", // s!
   insert: "insertMany",
   update: "updateMany",
   delete: "deleteMany",
 } as const;
 
 export const sqlToMongoDBoperatorsMapping = {
-  "=": "$eq",
+  "=": "$eq", // s!
+  "!=": "$ne", // s!
   ">": "$gt",
   "<": "$lt",
   ">=": "$gte",

src/index.mts

@@ -15,10 +15,10 @@ export class SqlToNoSql {
       throw new Error("missing query!");
     }
 
-    // TODO: add better validation!
-    if ([";", "(", ")"].some((char) => query.includes(char))) {
-      throw new Error("Invalid query, your query contains invalid characters!");
-    }
+    // // TODO: add better validation!
+    // if ([";", "(", ")"].some((char) => query.includes(char))) {
+    //   throw new Error("Invalid query, your query contains invalid characters!");
+    // }
 
     const q = parseQuery(query);
 

src/utils/parser.mts

@@ -10,28 +10,32 @@ export const parseQuery = (query: string): ParsedSqlType => {
     filters: null,
   };
 
-  const [command, ...rest] = query.toLocaleLowerCase().split(" ");
+  const [command, ...rest] = query.split(" ");
 
-  if (command !== "select") {
+  const lowerCaseCommand = command.toLowerCase();
+  if (lowerCaseCommand !== "select") {
     throw new Error("Only select queries are supported");
   }
-  parsedQuery.command = command;
+  // parsedQuery.command = command;
 
-  const fromIndex = rest.indexOf("from");
+  const fromIndex = rest.findIndex((word) => word.toLowerCase() === "from");
   if (fromIndex === -1) {
     throw new Error("Invalid query, missing FROM keyword");
   }
   parsedQuery.table = rest[fromIndex + 1];
   parsedQuery.columns = rest.slice(0, fromIndex);
 
-  const whereIndex = rest.indexOf("where");
+  const whereIndex = rest.findIndex((word) => word.toLowerCase() === "where");
   if (whereIndex !== -1) {
     parsedQuery.filters = [
       {
         column: rest[whereIndex + 1],
-        // FIXME: you know what to do here!
         operator: rest[whereIndex + 2] as "=",
-        value: rest[whereIndex + 3],
+        // to handle string and number values
+        value:
+          Number(rest[whereIndex + 3]) ||
+          // remove quotes from string values
+          String(rest[whereIndex + 3]).replace(/^'(.*)'$/, "$1"),
       },
     ];
   }