diff --git a/.gitignore b/.gitignore
index 7fba966..eed7ff6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 # Composer
 **/vendor/
 **/*.lock
+
+# PHPStorm
+**/.idea/
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..a983212
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,22 @@
+{
+    "name": "provm/query_builder",
+    "type": "project",
+    "require-dev": {
+        "phpunit/phpunit": "^9.5",
+        "kint-php/kint": "^4.2"
+    },
+    "authors": [
+        {
+            "name": "Aldarien",
+            "email": "aldarien85@gmail.com"
+        }
+    ],
+    "require": {
+        "psr/container": "^2.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "ProVM\\": "src/"
+        }
+    }
+}
diff --git a/src/Alias/Database/Query.php b/src/Alias/Database/Query.php
new file mode 100644
index 0000000..0bda90d
--- /dev/null
+++ b/src/Alias/Database/Query.php
@@ -0,0 +1,12 @@
+<?php
+namespace ProVM\Alias\Database;
+
+use ProVM\Concept\Database\Query as QueryInterface;
+
+abstract class Query implements QueryInterface
+{
+    public function __toString(): string
+    {
+        return $this->build();
+    }
+}
diff --git a/src/Alias/Database/Query/Delete.php b/src/Alias/Database/Query/Delete.php
new file mode 100644
index 0000000..a81d9c2
--- /dev/null
+++ b/src/Alias/Database/Query/Delete.php
@@ -0,0 +1,59 @@
+<?php
+namespace ProVM\Alias\Database\Query;
+
+use ProVM\Alias\Database\Query;
+use ProVM\Concept\Database\Query\Delete as DeleteInterface;
+
+abstract class Delete extends Query implements DeleteInterface
+{
+    public function from(string $table): DeleteInterface
+    {
+        return $this->setTable($table);
+    }
+    public function where(array $conditions): DeleteInterface
+    {
+        return $this->setConditions($conditions);
+    }
+
+    protected string $table;
+    public function setTable(string $table): DeleteInterface
+    {
+        $this->table = $table;
+        return $this;
+    }
+    public function getTable(): string
+    {
+        return $this->table;
+    }
+    protected array $conditions;
+    public function setConditions(array $conditions): DeleteInterface
+    {
+        foreach ($conditions as $condition) {
+            $this->addCondition($condition);
+        }
+        return $this;
+    }
+    public function addCondition(string $expression): DeleteInterface
+    {
+        $this->conditions []= $expression;
+        return $this;
+    }
+    public function getConditions(): array
+    {
+        return $this->conditions;
+    }
+    public function getConditionString(): string
+    {
+        return implode(' ', $this->getConditions());
+    }
+
+    public function build(): string
+    {
+        return implode(' ', [
+            'DELETE FROM',
+            $this->getTable(),
+            'WHERE',
+            $this->getConditionString()
+        ]);
+    }
+}
diff --git a/src/Alias/Database/Query/Insert.php b/src/Alias/Database/Query/Insert.php
new file mode 100644
index 0000000..4f633eb
--- /dev/null
+++ b/src/Alias/Database/Query/Insert.php
@@ -0,0 +1,108 @@
+<?php
+namespace ProVM\Alias\Database\Query;
+
+use ProVM\Alias\Database\Query;
+use ProVM\Concept\Database\Query\Insert as InsertInterface;
+use ProVM\Concept\Database\Query\Select;
+
+abstract class Insert extends Query implements InsertInterface
+{
+    public function into(string $table): InsertInterface
+    {
+        return $this->setTable($table);
+    }
+    public function columns(array $columns): InsertInterface
+    {
+        return $this->setColumns($columns);
+    }
+    public function values(array $values): InsertInterface
+    {
+        return $this->setValues($values);
+    }
+    public function select(Select $select): InsertInterface
+    {
+        return $this->setSelect($select);
+    }
+
+    protected string $table;
+    public function setTable(string $table): InsertInterface
+    {
+        $this->table = $table;
+        return $this;
+    }
+    public function getTable(): string
+    {
+        return $this->table;
+    }
+    protected array $columns;
+    public function setColumns(array $columns): InsertInterface
+    {
+        foreach ($columns as $column) {
+            $this->addColumn($column);
+        }
+        return $this;
+    }
+    public function addColumn(string $column): InsertInterface
+    {
+        $this->columns []= $column;
+        return $this;
+    }
+    public function getColumns(): array
+    {
+        return $this->columns;
+    }
+    public function getColumnString(): string
+    {
+        return implode(', ', $this->getColumns());
+    }
+    protected array $values;
+    public function setValues(array $values): InsertInterface
+    {
+        foreach ($values as $value) {
+            $this->addValue($value);
+        }
+        return $this;
+    }
+    public function addValue(int|string $value): InsertInterface
+    {
+        if (!is_numeric($value)) {
+            $value = "'{$value}'";
+        }
+        $this->values []= $value;
+        return $this;
+    }
+    public function getValues(): array
+    {
+        return $this->values;
+    }
+    public function getValueString(): string
+    {
+        return implode(', ', $this->getValues());
+    }
+    protected Select $select;
+    public function setSelect(Select $select): InsertInterface
+    {
+        $this->select = $select;
+        return $this;
+    }
+    public function getSelect(): Select
+    {
+        return $this->select;
+    }
+
+    public function build(): string
+    {
+        $query = ["INSERT INTO"];
+        $query []= $this->getTable();
+        if (isset($this->columns)) {
+            $query []= "({$this->getColumnString()})";
+        }
+        if (isset($this->select)) {
+            $query []= "{$this->getSelect()}";
+            return implode(' ', $query);
+        }
+        $query []= 'VALUES';
+        $query []= "({$this->getValueString()})";
+        return implode(' ', $query);
+    }
+}
diff --git a/src/Alias/Database/Query/Select.php b/src/Alias/Database/Query/Select.php
new file mode 100644
index 0000000..6b69c13
--- /dev/null
+++ b/src/Alias/Database/Query/Select.php
@@ -0,0 +1,222 @@
+<?php
+namespace ProVM\Alias\Database\Query;
+
+use ProVM\Alias\Database\Query;
+use ProVM\Concept\Database\Query\Select as SelectInterface;
+
+abstract class Select extends Query implements SelectInterface
+{
+    public function select(array $columns = ['*']): SelectInterface
+    {
+        return $this->setColumns($columns);
+    }
+    public function from(string $table): SelectInterface
+    {
+        return $this->setTable($table);
+    }
+    public function joins(array $joins): SelectInterface
+    {
+        return $this->setJoins($joins);
+    }
+    public function where(array $conditions): SelectInterface
+    {
+        return $this->setConditions($conditions);
+    }
+    public function groupBy(array $grouping): SelectInterface
+    {
+        return $this->setGroups($grouping);
+    }
+    public function having(array $having): SelectInterface
+    {
+        return $this->setHaving($having);
+    }
+    public function orderBy(array $ordering): SelectInterface
+    {
+        return $this->setOrders($ordering);
+    }
+
+    protected array $columns;
+    public function setColumns(array $columns): SelectInterface
+    {
+        foreach ($columns as $column) {
+            $col = $column;
+            $alias = null;
+            if (is_array($column)) {
+                $col = $column['column'] ?? $column[0];
+                $alias = $column['alias'] ?? $column[1];
+            }
+            $this->addColumn($column, $alias);
+        }
+        return $this;
+    }
+    public function addColumn(string $column, ?string $alias = null): SelectInterface
+    {
+        $a = '';
+        if ($alias !== null) {
+            $a = " AS '{$alias}'";
+        }
+        $this->columns[] = "`{$column}`{$a}";
+        return $this;
+    }
+    public function getColumns(): array
+    {
+        return $this->columns;
+    }
+    public function getColumnString(): string
+    {
+        return implode(', ', $this->getColumns());
+    }
+    protected string $table;
+    public function setTable(string $table, ?string $alias = null): SelectInterface
+    {
+        $table = "`{$table}`";
+        if ($alias !== null) {
+            $table = "{$table} '{$alias}'";
+        }
+        $this->table = $table;
+        return $this;
+    }
+    public function getTable(): string
+    {
+        return $this->table;
+    }
+    protected array $joins;
+    public function setJoins(array $joins): SelectInterface
+    {
+        foreach ($joins as $join) {
+            $table = $join['table'] ?? $join[0];
+            $expression = $join['expression'] ?? $join[1];
+            $this->addJoin($table, $expression);
+        }
+        return $this;
+    }
+    public function addJoin(string $table, string $expression): SelectInterface
+    {
+        $this->joins []= "{$table} ON {$expression}";
+        return $this;
+    }
+    public function getJoins(): array
+    {
+        return $this->joins;
+    }
+    public function getJoinString(): string
+    {
+        return implode(' ', $this->getJoins());
+    }
+    protected array $conditions;
+    public function setConditions(array $conditions): SelectInterface
+    {
+        foreach ($conditions as $condition) {
+            $this->addCondition($condition);
+        }
+        return $this;
+    }
+    public function addCondition(string $expression): SelectInterface
+    {
+        $this->conditions []= $expression;
+        return $this;
+    }
+    public function getConditions(): array
+    {
+        return $this->conditions;
+    }
+    public function getConditionString(): string
+    {
+        return implode(' ', $this->getConditions());
+    }
+    protected array $groups;
+    public function setGroups(array $groups): SelectInterface
+    {
+        foreach ($groups as $group) {
+            $this->addGroup($group);
+        }
+        return $this;
+    }
+    public function addGroup(string $group): SelectInterface
+    {
+        $this->groups []= "`{$group}`";
+        return $this;
+    }
+    public function getGroups(): array
+    {
+        return $this->groups;
+    }
+    public function getGroupString(): string
+    {
+        return implode(', ', $this->getGroups());
+    }
+    protected array $having;
+    public function setHaving(array $having): SelectInterface
+    {
+        foreach ($having as $item) {
+            $this->addHaving($item);
+        }
+        return $this;
+    }
+    public function addHaving(string $having): SelectInterface
+    {
+        $this->having []= $having;
+        return $this;
+    }
+    public function getHaving(): array
+    {
+        return $this->having;
+    }
+    public function getHavingString(): string
+    {
+        return implode(', ', $this->getHaving());
+    }
+    protected array $orders;
+    public function setOrders(array $orders): SelectInterface
+    {
+        foreach ($orders as $order) {
+            $column = $order;
+            $direction = null;
+            if (is_array($order)) {
+                $direction = $order['direction'] ?? $order[1];
+                $column = $order['column'] ?? $order[0];
+            }
+            $this->addOrder($column, $direction);
+        }
+        return $this;
+    }
+    public function addOrder(string $column, ?string $direction = null): SelectInterface
+    {
+        if ($direction === null) {
+            $direction = 'ASC';
+        }
+        $this->orders []= "{$column} {$direction}";
+        return $this;
+    }
+    public function getOrders(): array
+    {
+        return $this->orders;
+    }
+    public function getOrderString(): string
+    {
+        return implode(', ', $this->getOrders());
+    }
+
+    public function build(): string
+    {
+        $query = ["SELECT"];
+        $query []= $this->getColumnString();
+        $query []= "FROM {$this->getTable()}";
+        if (isset($this->joins)) {
+            $query []= $this->getJoinString();
+        }
+        if (isset($this->conditions)) {
+            $query []= "WHERE {$this->getConditionString()}";
+        }
+        if (isset($this->groups)) {
+            $query []= "GROUP BY {$this->getGroupString()}";
+        }
+        if (isset($this->having)) {
+            $query []= "HAVING {$this->getHavingString()}";
+        }
+        if (isset($this->orders)) {
+            $query []= "ORDER BY {$this->getOrderString()}";
+        }
+        return implode(' ', $query);
+    }
+}
diff --git a/src/Alias/Database/Query/Update.php b/src/Alias/Database/Query/Update.php
new file mode 100644
index 0000000..e4e0c58
--- /dev/null
+++ b/src/Alias/Database/Query/Update.php
@@ -0,0 +1,91 @@
+<?php
+namespace ProVM\Alias\Database\Query;
+
+use ProVM\Alias\Database\Query;
+use ProVM\Concept\Database\Query\Update as UpdateInterface;
+
+abstract class Update extends Query implements UpdateInterface
+{
+    public function table(string $table): UpdateInterface
+    {
+        return $this->setTable($table);
+    }
+    public function set(array $value_pairs): UpdateInterface
+    {
+        return $this->setValues($value_pairs);
+    }
+    public function where(array $conditions): UpdateInterface
+    {
+        return $this->setConditions($conditions);
+    }
+
+    protected string $table;
+    public function setTable(string $table): UpdateInterface
+    {
+        $this->table = $table;
+        return $this;
+    }
+    public function getTable(): string
+    {
+        return $this->table;
+    }
+    protected array $values;
+    public function setValues(array $values): UpdateInterface
+    {
+        foreach ($values as $value) {
+            $column = $value['column'] ?? $value[0];
+            $val = $value['value'] ?? $value[1];
+            $this->addValue($column, $val);
+        }
+        return $this;
+    }
+    public function addValue(string $column, int|string $value): UpdateInterface
+    {
+        if (!is_numeric($value)) {
+            $value = "'{$value}'";
+        }
+        $this->values []= "`{$column}` = {$value}";
+        return $this;
+    }
+    public function getValues(): array
+    {
+        return $this->values;
+    }
+    public function getValueString(): string
+    {
+        return implode(', ', $this->getValues());
+    }
+    protected array $conditions;
+    public function setConditions(array $conditions): UpdateInterface
+    {
+        foreach ($conditions as $condition) {
+            $this->addCondition($condition);
+        }
+        return $this;
+    }
+    public function addCondition(string $expression): UpdateInterface
+    {
+        $this->conditions []= $expression;
+        return $this;
+    }
+    public function getConditions(): array
+    {
+        return $this->conditions;
+    }
+    public function getConditionString(): string
+    {
+        return implode(' ', $this->getConditions());
+    }
+
+    public function build(): string
+    {
+        return implode(' ', [
+            'UPDATE',
+            $this->getTable(),
+            'SET',
+            $this->getValueString(),
+            'WHERE',
+            $this->getConditionString()
+        ]);
+    }
+}
diff --git a/src/Concept/Database/Query.php b/src/Concept/Database/Query.php
new file mode 100644
index 0000000..6a325ee
--- /dev/null
+++ b/src/Concept/Database/Query.php
@@ -0,0 +1,8 @@
+<?php
+namespace ProVM\Concept\Database;
+
+interface Query
+{
+    public function build(): string;
+    public function __toString(): string;
+}
diff --git a/src/Concept/Database/Query/Delete.php b/src/Concept/Database/Query/Delete.php
new file mode 100644
index 0000000..e3a8f2d
--- /dev/null
+++ b/src/Concept/Database/Query/Delete.php
@@ -0,0 +1,10 @@
+<?php
+namespace ProVM\Concept\Database\Query;
+
+use ProVM\Concept\Database\Query;
+
+interface Delete extends Query
+{
+    public function from(string $table): Delete;
+    public function where(array $conditions): Delete;
+}
diff --git a/src/Concept/Database/Query/Insert.php b/src/Concept/Database/Query/Insert.php
new file mode 100644
index 0000000..24a5026
--- /dev/null
+++ b/src/Concept/Database/Query/Insert.php
@@ -0,0 +1,12 @@
+<?php
+namespace ProVM\Concept\Database\Query;
+
+use ProVM\Concept\Database\Query;
+
+interface Insert extends Query
+{
+    public function into(string $table): Insert;
+    public function columns(array $columns): Insert;
+    public function values(array $values): Insert;
+    public function select(Select $select): Insert;
+}
diff --git a/src/Concept/Database/Query/Select.php b/src/Concept/Database/Query/Select.php
new file mode 100644
index 0000000..4aef050
--- /dev/null
+++ b/src/Concept/Database/Query/Select.php
@@ -0,0 +1,15 @@
+<?php
+namespace ProVM\Concept\Database\Query;
+
+use ProVM\Concept\Database\Query;
+
+interface Select extends Query
+{
+    public function select(array $columns = ['*']): Select;
+    public function from(string $table): Select;
+    public function joins(array $joins): Select;
+    public function where(array $conditions): Select;
+    public function groupBy(array $grouping): Select;
+    public function having(array $having): Select;
+    public function orderBy(array $ordering): Select;
+}
diff --git a/src/Concept/Database/Query/Update.php b/src/Concept/Database/Query/Update.php
new file mode 100644
index 0000000..87b769a
--- /dev/null
+++ b/src/Concept/Database/Query/Update.php
@@ -0,0 +1,11 @@
+<?php
+namespace ProVM\Concept\Database\Query;
+
+use ProVM\Concept\Database\Query;
+
+interface Update extends Query
+{
+    public function table(string $table): Update;
+    public function set(array $value_pairs): Update;
+    public function where(array $conditions): Update;
+}
diff --git a/src/Concept/Database/QueryBuilder.php b/src/Concept/Database/QueryBuilder.php
new file mode 100644
index 0000000..81a4a81
--- /dev/null
+++ b/src/Concept/Database/QueryBuilder.php
@@ -0,0 +1,15 @@
+<?php
+namespace ProVM\Concept\Database;
+
+use Psr\Container\ContainerInterface;
+use ProVM\Concept\Database\Query\{Delete,Insert,Select,Update};
+
+interface QueryBuilder
+{
+    public function setContainer(ContainerInterface $container): QueryBuilder;
+    public function getContainer(): ContainerInterface;
+    public function select(array $columns = ['*']): Select;
+    public function insert(string $table): Insert;
+    public function update(string $table): Update;
+    public function delete(string $table): Delete;
+}
diff --git a/src/Database/Query/MySQL/Delete.php b/src/Database/Query/MySQL/Delete.php
new file mode 100644
index 0000000..fbce5cd
--- /dev/null
+++ b/src/Database/Query/MySQL/Delete.php
@@ -0,0 +1,7 @@
+<?php
+namespace ProVM\Database\Query\MySQL;
+
+use ProVM\Alias\Database\Query\Delete as Base;
+
+class Delete extends Base
+{}
diff --git a/src/Database/Query/MySQL/Insert.php b/src/Database/Query/MySQL/Insert.php
new file mode 100644
index 0000000..e001db6
--- /dev/null
+++ b/src/Database/Query/MySQL/Insert.php
@@ -0,0 +1,7 @@
+<?php
+namespace ProVM\Database\Query\MySQL;
+
+use ProVM\Alias\Database\Query\Insert as Base;
+
+class Insert extends Base
+{}
diff --git a/src/Database/Query/MySQL/Select.php b/src/Database/Query/MySQL/Select.php
new file mode 100644
index 0000000..1844cad
--- /dev/null
+++ b/src/Database/Query/MySQL/Select.php
@@ -0,0 +1,50 @@
+<?php
+namespace ProVM\Database\Query\MySQL;
+
+use ProVM\Alias\Database\Query\Select as Base;
+
+class Select extends Base
+{
+    public function limit(int $limit, ?int $offset = null): Select
+    {
+        $this->setLimit($limit);
+        if ($offset !== null) {
+            $this->setOffset($offset);
+        }
+        return $this;
+    }
+    protected int $limit;
+    public function setLimit(int $limit): Select
+    {
+        $this->limit = $limit;
+        return $this;
+    }
+    public function getLimit(): int
+    {
+        return $this->limit;
+    }
+    protected int $offset;
+    public function setOffset(int $offset): Select
+    {
+        $this->offset = $offset;
+        return $this;
+    }
+    public function getOffset(): int
+    {
+        return $this->offset;
+    }
+
+    public function build(): string
+    {
+        $query = [parent::build()];
+        if (isset($this->limit)) {
+            $query []= 'LIMIT';
+            $query []= $this->getLimit();
+            if (isset($this->offset)) {
+                $query []= 'OFFSET';
+                $query []= $this->getOffset();
+            }
+        }
+        return implode(' ', $query);
+    }
+}
diff --git a/src/Database/Query/MySQL/Update.php b/src/Database/Query/MySQL/Update.php
new file mode 100644
index 0000000..26bfa64
--- /dev/null
+++ b/src/Database/Query/MySQL/Update.php
@@ -0,0 +1,7 @@
+<?php
+namespace ProVM\Database\Query\MySQL;
+
+use ProVM\Alias\Database\Query\Update as Base;
+
+class Update extends Base
+{}
diff --git a/src/Database/QueryBuilder.php b/src/Database/QueryBuilder.php
new file mode 100644
index 0000000..a9bd65e
--- /dev/null
+++ b/src/Database/QueryBuilder.php
@@ -0,0 +1,37 @@
+<?php
+namespace ProVM\Database;
+
+use Psr\Container\ContainerInterface;
+use ProVM\Concept\Database\QueryBuilder as QBInterface;
+use ProVM\Concept\Database\Query\{Delete,Insert,Select,Update};
+
+class QueryBuilder implements QBInterface
+{
+    protected ContainerInterface $container;
+    public function setContainer(ContainerInterface $container): QBInterface
+    {
+        $this->container = $container;
+        return $this;
+    }
+    public function getContainer(): ContainerInterface
+    {
+        return $this->container;
+    }
+
+    public function select(array $columns = ['*']): Select
+    {
+        return $this->getContainer()->get(Select::class)->select($columns);
+    }
+    public function insert(string $table): Insert
+    {
+        return $this->getContainer()->get(Insert::class)->into($table);
+    }
+    public function update(string $table): Update
+    {
+        return $this->getContainer()->get(Update::class)->table($table);
+    }
+    public function delete(string $table): Delete
+    {
+        return $this->getContainer()->get(Delete::class)->from($table);
+    }
+}