extended create and added delete/truncate statement

src/lib/CreateStatement.h

@@ -6,16 +6,31 @@
 namespace hsql {
 
 
-typedef enum {
+/**
-	kTable,
+ * @struct ColumnDefinition
-	kTableFromTbl, // Hyrise file format
+ */
-} CreateType;
+struct ColumnDefinition {
+	enum DataType {
+		TEXT,
+		INT,
+		DOUBLE
+	};
 
+	char* name;
+	DataType type;
+};
 
 /**
  * @struct CreateStatement
+ * CREATE TABLE students (name TEXT, student_number INTEGER, city TEXT, grade DOUBLE)
+ * CREATE TABLE students FROM TBL FILE 'test/students.tbl'
  */
 struct CreateStatement : Statement {
+	enum CreateType {
+		kTable,
+		kTableFromTbl, // Hyrise file format
+	};
+
 	CreateStatement() :
 		Statement(kStmtCreate),
 		if_not_exists(false),
@@ -33,6 +48,4 @@ struct CreateStatement : Statement {
 
 
 } // namespace hsql
-
-
 #endif

src/lib/DeleteStatement.h

@@ -0,0 +1,30 @@
+#ifndef __DELETE_STATEMENT_H__
+#define __DELETE_STATEMENT_H__
+
+#include "Statement.h"
+
+namespace hsql {
+
+
+/**
+ * @struct DeleteStatement
+ * DELETE FROM students WHERE grade > 3.0
+ * DELETE FROM students <=> TRUNCATE students
+ *
+ * If expr == NULL => delete all rows (truncate)
+ */
+struct DeleteStatement : Statement {
+	DeleteStatement() :
+		Statement(kStmtDelete),
+		expr(NULL) {};
+
+	virtual ~DeleteStatement(); // defined in destructors.cpp
+
+	char* table_name;
+	Expr* expr;
+};
+
+
+
+} // namespace hsql
+#endif

src/lib/InsertStatement.h

@@ -7,6 +7,11 @@
 namespace hsql {
 
 
+/**
+ * @struct InsertStatement
+ * INSERT INTO students VALUES ('Max', 1112233, 'Musterhausen', 2.3)
+ * INSERT INTO employees SELECT * FROM stundents
+ */
 struct InsertStatement : Statement {
 	typedef enum {
 		kInsertValues,

src/lib/destructors.cpp

@@ -36,6 +36,10 @@ InsertStatement::~InsertStatement() {
 	delete select;
 }
 
+DeleteStatement::~DeleteStatement() {
+	delete expr;
+}
+
 
 
 OrderDescription::~OrderDescription() {

src/lib/sqllib.h

@@ -7,6 +7,6 @@
 #include "CreateStatement.h"
 #include "InsertStatement.h"
 #include "UpdateStatement.h"
-
+#include "DeleteStatement.h"
 
 #endif

src/parser/bison_parser.y

@@ -83,6 +83,7 @@ typedef void* yyscan_t;
 	hsql::ImportStatement* import_stmt;
 	hsql::CreateStatement* create_stmt;
 	hsql::InsertStatement* insert_stmt;
+	hsql::DeleteStatement* delete_stmt;
 
 	hsql::TableRef* table;
 	hsql::Expr* expr;
@@ -131,6 +132,7 @@ typedef void* yyscan_t;
 %type <import_stmt> import_statement
 %type <create_stmt> create_statement
 %type <insert_stmt> insert_statement
+%type <delete_stmt> delete_statement truncate_statement
 %type <sval> 		table_name opt_alias alias file_path
 %type <bval> 		opt_not_exists
 %type <table> 		from_clause table_ref table_ref_atomic table_ref_name
@@ -190,12 +192,14 @@ statement:
 	|	import_statement { $$ = $1; }
 	|	create_statement { $$ = $1; }
 	|	insert_statement { $$ = $1; }
+	|	delete_statement { $$ = $1; }
+	|	truncate_statement { $$ = $1; }
 	;
 
 
 
 /******************************
- ** Import Statement
+ * Import Statement
  ******************************/
 import_statement:
 		IMPORT FROM import_file_type FILE file_path INTO table_name {
@@ -216,16 +220,25 @@ file_path:
 
 
 /******************************
- ** Create Statement
+ * Create Statement
+ * CREATE TABLE students (name TEXT, student_number INTEGER, city TEXT, grade DOUBLE)
+ * CREATE TABLE students FROM TBL FILE 'test/students.tbl'
  ******************************/
 create_statement:
 		CREATE TABLE opt_not_exists table_name FROM TBL FILE file_path {
 			$$ = new CreateStatement();
-			$$->create_type = kTableFromTbl;
+			$$->create_type = CreateStatement::kTableFromTbl;
 			$$->if_not_exists = $3;
 			$$->table_name = $4;
 			$$->file_path = $8;
 		}
+	|	CREATE TABLE opt_not_exists table_name '(' column_def_commalist ')' {
+			$$ = new CreateStatement();
+			$$->create_type = CreateStatement::kTable;
+			$$->if_not_exists = $3;
+			$$->table_name = $4;
+			// TODO: build into object
+		}
 	;
 
 opt_not_exists:
@@ -233,9 +246,46 @@ opt_not_exists:
 	|	/* empty */ { $$ = false; }
 	;
 
+column_def_commalist:
+		column_def
+	|	column_def_commalist ',' column_def
+	;
+
+column_def:
+		IDENTIFIER column_type
+	;
+
+column_type:
+		INTEGER
+	|	DOUBLE
+	|	TEXT
+	;
+
 
 /******************************
- ** Insert Statement
+ * Delete Statement / Truncate statement
+ * DELETE FROM students WHERE grade > 3.0
+ * DELETE FROM students <=> TRUNCATE students
+ ******************************/
+delete_statement:
+		DELETE FROM table_name opt_where {
+			$$ = new DeleteStatement();
+			$$->table_name = $3;
+			$$->expr = $4;
+		}
+	;
+
+truncate_statement:
+		TRUNCATE table_name {
+			$$ = new DeleteStatement();
+			$$->table_name = $2;
+		}
+	;
+
+/******************************
+ * Insert Statement
+ * INSERT INTO students VALUES ('Max', 1112233, 'Musterhausen', 2.3)
+ * INSERT INTO employees SELECT * FROM stundents
  ******************************/
 insert_statement:
 		INSERT INTO table_name opt_column_list VALUES '(' literal_list ')' {
@@ -261,7 +311,7 @@ opt_column_list:
 	;
 
 /******************************
- ** Select Statement
+ * Select Statement
  ******************************/
 
 select_statement:
@@ -349,7 +399,7 @@ opt_limit:
 	;
 
 /******************************
- ** Expressions 
+ * Expressions 
  ******************************/
 expr_list:
 		expr_alias { $$ = new List<Expr*>($1); }
@@ -445,7 +495,7 @@ star_expr:
 
 
 /******************************
- ** Table 
+ * Table 
  ******************************/
 table_ref:
 		table_ref_atomic
@@ -502,7 +552,7 @@ opt_alias:
 
 
 /******************************
- ** Join Statements
+ * Join Statements
  ******************************/
 
 join_clause:
@@ -543,7 +593,7 @@ join_condition:
 
 
 /******************************
- ** Misc
+ * Misc
  ******************************/
 
 opt_semicolon:

test/valid_queries.sql

@@ -13,9 +13,14 @@ SELECT * FROM t1 JOIN t2 ON c1 = c2;
 # CREATE statement
 CREATE TABLE "table" FROM TBL FILE 'students.tbl'
 CREATE TABLE IF NOT EXISTS "table" FROM TBL FILE 'students.tbl'
+CREATE TABLE students (name TEXT, student_number INTEGER, city TEXT, grade DOUBLE)
 # Multiple statements
 CREATE TABLE "table" FROM TBL FILE 'students.tbl'; SELECT * FROM "table";
 # INSERT
 INSERT INTO test_table VALUES (1, 2, 'test');
 INSERT INTO test_table (id, value, name) VALUES (1, 2, 'test');
 INSERT INTO test_table SELECT * FROM students;
+# DELETE
+DELETE FROM students WHERE grade > 3.0
+DELETE FROM students
+TRUNCATE students