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Add support for SHOW TABLES statement

This commit is contained in:
Tim Zimmermann 2017-08-23 23:09:02 +02:00
parent f815247510
commit 0233f77cef
13 changed files with 1609 additions and 2112 deletions
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3
.gitignore vendored
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@ -45,3 +45,6 @@ cmake-build-debug/
*.swp
*.csv
# macOS compilation dirs
*.dSYM

2250
src/parser/bison_parser.cpp
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11
src/parser/bison_parser.h
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@ -1,8 +1,8 @@
/* A Bison parser, made by GNU Bison 3.0.4. */
/* A Bison parser, made by GNU Bison 3.0.2. */
/* Bison interface for Yacc-like parsers in C
Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -214,7 +214,7 @@ extern int hsql_debug;
/* Value type. */
#if ! defined HSQL_STYPE && ! defined HSQL_STYPE_IS_DECLARED
typedef union HSQL_STYPE HSQL_STYPE;
union HSQL_STYPE
{
#line 93 "bison_parser.y" /* yacc.c:1909 */
@ -235,6 +235,7 @@ union HSQL_STYPE
hsql::DropStatement* drop_stmt;
hsql::PrepareStatement* prep_stmt;
hsql::ExecuteStatement* exec_stmt;
hsql::ShowStatement* show_stmt;
hsql::TableRef* table;
hsql::Expr* expr;
@ -254,10 +255,8 @@ union HSQL_STYPE
std::vector<hsql::Expr*>* expr_vec;
std::vector<hsql::OrderDescription*>* order_vec;
#line 258 "bison_parser.h" /* yacc.c:1909 */
#line 259 "bison_parser.h" /* yacc.c:1909 */
};
typedef union HSQL_STYPE HSQL_STYPE;
# define HSQL_STYPE_IS_TRIVIAL 1
# define HSQL_STYPE_IS_DECLARED 1
#endif

27
src/parser/bison_parser.y
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@ -107,6 +107,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
hsql::DropStatement* drop_stmt;
hsql::PrepareStatement* prep_stmt;
hsql::ExecuteStatement* exec_stmt;
hsql::ShowStatement* show_stmt;
hsql::TableRef* table;
hsql::Expr* expr;
@ -182,6 +183,7 @@ int yyerror(YYLTYPE* llocp, SQLParserResult* result, yyscan_t scanner, const cha
%type <delete_stmt> delete_statement truncate_statement
%type <update_stmt> update_statement
%type <drop_stmt> drop_statement
%type <show_stmt> show_statement
%type <sval> table_name opt_alias alias file_path prepare_target_query
%type <bval> opt_not_exists opt_distinct
%type <uval> import_file_type opt_join_type column_type
@ -271,6 +273,9 @@ statement:
$$ = $1;
$$->hints = $2;
}
| show_statement {
$$ = $1;
}
;
@ -361,6 +366,22 @@ file_path:
;
/******************************
* Show Statement
* SHOW TABLES;
******************************/
show_statement:
SHOW TABLES {
$$ = new ShowStatement(kShowTables);
}
| SHOW COLUMNS table_name {
$$ = new ShowStatement(kShowColumns);
$$->name = $3;
}
;
/******************************
* Create Statement
* CREATE TABLE students (name TEXT, student_number INTEGER, city TEXT, grade DOUBLE)
@ -836,7 +857,7 @@ table_ref_atomic:
| join_clause
;
nonjoin_table_ref_atomic:
nonjoin_table_ref_atomic:
table_ref_name
| '(' select_statement ')' opt_alias {
auto tbl = new TableRef(kTableSelect);
@ -900,7 +921,7 @@ join_clause:
$$->join->right = $4;
}
| table_ref_atomic opt_join_type JOIN table_ref_atomic ON join_condition
{
{
$$ = new TableRef(kTableJoin);
$$->join = new JoinDefinition();
$$->join->type = (JoinType) $2;
@ -910,7 +931,7 @@ join_clause:
}
|
table_ref_atomic opt_join_type JOIN table_ref_atomic USING '(' column_name ')'
{
{
$$ = new TableRef(kTableJoin);
$$->join = new JoinDefinition();
$$->join->type = (JoinType) $2;

853
src/parser/flex_lexer.cpp
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503
src/parser/flex_lexer.h
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@ -2,9 +2,9 @@
#define hsql_HEADER_H 1
#define hsql_IN_HEADER 1
#line 5 "flex_lexer.h"
#line 6 "flex_lexer.h"
#line 7 "flex_lexer.h"
#line 8 "flex_lexer.h"
#define YY_INT_ALIGNED short int
@ -12,246 +12,12 @@
#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 6
#define YY_FLEX_SUBMINOR_VERSION 4
#define YY_FLEX_MINOR_VERSION 5
#define YY_FLEX_SUBMINOR_VERSION 35
#if YY_FLEX_SUBMINOR_VERSION > 0
#define FLEX_BETA
#endif
#ifdef yy_create_buffer
#define hsql__create_buffer_ALREADY_DEFINED
#else
#define yy_create_buffer hsql__create_buffer
#endif
#ifdef yy_delete_buffer
#define hsql__delete_buffer_ALREADY_DEFINED
#else
#define yy_delete_buffer hsql__delete_buffer
#endif
#ifdef yy_scan_buffer
#define hsql__scan_buffer_ALREADY_DEFINED
#else
#define yy_scan_buffer hsql__scan_buffer
#endif
#ifdef yy_scan_string
#define hsql__scan_string_ALREADY_DEFINED
#else
#define yy_scan_string hsql__scan_string
#endif
#ifdef yy_scan_bytes
#define hsql__scan_bytes_ALREADY_DEFINED
#else
#define yy_scan_bytes hsql__scan_bytes
#endif
#ifdef yy_init_buffer
#define hsql__init_buffer_ALREADY_DEFINED
#else
#define yy_init_buffer hsql__init_buffer
#endif
#ifdef yy_flush_buffer
#define hsql__flush_buffer_ALREADY_DEFINED
#else
#define yy_flush_buffer hsql__flush_buffer
#endif
#ifdef yy_load_buffer_state
#define hsql__load_buffer_state_ALREADY_DEFINED
#else
#define yy_load_buffer_state hsql__load_buffer_state
#endif
#ifdef yy_switch_to_buffer
#define hsql__switch_to_buffer_ALREADY_DEFINED
#else
#define yy_switch_to_buffer hsql__switch_to_buffer
#endif
#ifdef yypush_buffer_state
#define hsql_push_buffer_state_ALREADY_DEFINED
#else
#define yypush_buffer_state hsql_push_buffer_state
#endif
#ifdef yypop_buffer_state
#define hsql_pop_buffer_state_ALREADY_DEFINED
#else
#define yypop_buffer_state hsql_pop_buffer_state
#endif
#ifdef yyensure_buffer_stack
#define hsql_ensure_buffer_stack_ALREADY_DEFINED
#else
#define yyensure_buffer_stack hsql_ensure_buffer_stack
#endif
#ifdef yylex
#define hsql_lex_ALREADY_DEFINED
#else
#define yylex hsql_lex
#endif
#ifdef yyrestart
#define hsql_restart_ALREADY_DEFINED
#else
#define yyrestart hsql_restart
#endif
#ifdef yylex_init
#define hsql_lex_init_ALREADY_DEFINED
#else
#define yylex_init hsql_lex_init
#endif
#ifdef yylex_init_extra
#define hsql_lex_init_extra_ALREADY_DEFINED
#else
#define yylex_init_extra hsql_lex_init_extra
#endif
#ifdef yylex_destroy
#define hsql_lex_destroy_ALREADY_DEFINED
#else
#define yylex_destroy hsql_lex_destroy
#endif
#ifdef yyget_debug
#define hsql_get_debug_ALREADY_DEFINED
#else
#define yyget_debug hsql_get_debug
#endif
#ifdef yyset_debug
#define hsql_set_debug_ALREADY_DEFINED
#else
#define yyset_debug hsql_set_debug
#endif
#ifdef yyget_extra
#define hsql_get_extra_ALREADY_DEFINED
#else
#define yyget_extra hsql_get_extra
#endif
#ifdef yyset_extra
#define hsql_set_extra_ALREADY_DEFINED
#else
#define yyset_extra hsql_set_extra
#endif
#ifdef yyget_in
#define hsql_get_in_ALREADY_DEFINED
#else
#define yyget_in hsql_get_in
#endif
#ifdef yyset_in
#define hsql_set_in_ALREADY_DEFINED
#else
#define yyset_in hsql_set_in
#endif
#ifdef yyget_out
#define hsql_get_out_ALREADY_DEFINED
#else
#define yyget_out hsql_get_out
#endif
#ifdef yyset_out
#define hsql_set_out_ALREADY_DEFINED
#else
#define yyset_out hsql_set_out
#endif
#ifdef yyget_leng
#define hsql_get_leng_ALREADY_DEFINED
#else
#define yyget_leng hsql_get_leng
#endif
#ifdef yyget_text
#define hsql_get_text_ALREADY_DEFINED
#else
#define yyget_text hsql_get_text
#endif
#ifdef yyget_lineno
#define hsql_get_lineno_ALREADY_DEFINED
#else
#define yyget_lineno hsql_get_lineno
#endif
#ifdef yyset_lineno
#define hsql_set_lineno_ALREADY_DEFINED
#else
#define yyset_lineno hsql_set_lineno
#endif
#ifdef yyget_column
#define hsql_get_column_ALREADY_DEFINED
#else
#define yyget_column hsql_get_column
#endif
#ifdef yyset_column
#define hsql_set_column_ALREADY_DEFINED
#else
#define yyset_column hsql_set_column
#endif
#ifdef yywrap
#define hsql_wrap_ALREADY_DEFINED
#else
#define yywrap hsql_wrap
#endif
#ifdef yyget_lval
#define hsql_get_lval_ALREADY_DEFINED
#else
#define yyget_lval hsql_get_lval
#endif
#ifdef yyset_lval
#define hsql_set_lval_ALREADY_DEFINED
#else
#define yyset_lval hsql_set_lval
#endif
#ifdef yyget_lloc
#define hsql_get_lloc_ALREADY_DEFINED
#else
#define yyget_lloc hsql_get_lloc
#endif
#ifdef yyset_lloc
#define hsql_set_lloc_ALREADY_DEFINED
#else
#define yyset_lloc hsql_set_lloc
#endif
#ifdef yyalloc
#define hsql_alloc_ALREADY_DEFINED
#else
#define yyalloc hsql_alloc
#endif
#ifdef yyrealloc
#define hsql_realloc_ALREADY_DEFINED
#else
#define yyrealloc hsql_realloc
#endif
#ifdef yyfree
#define hsql_free_ALREADY_DEFINED
#else
#define yyfree hsql_free
#endif
/* First, we deal with platform-specific or compiler-specific issues. */
/* begin standard C headers. */
@ -322,23 +88,29 @@ typedef unsigned int flex_uint32_t;
#define UINT32_MAX (4294967295U)
#endif
#ifndef SIZE_MAX
#define SIZE_MAX (~(size_t)0)
#endif
#endif /* ! C99 */
#endif /* ! FLEXINT_H */
/* begin standard C++ headers. */
#ifdef __cplusplus
/* TODO: this is always defined, so inline it */
/* The "const" storage-class-modifier is valid. */
#define YY_USE_CONST
#else /* ! __cplusplus */
/* C99 requires __STDC__ to be defined as 1. */
#if defined (__STDC__)
#define YY_USE_CONST
#endif /* defined (__STDC__) */
#endif /* ! __cplusplus */
#ifdef YY_USE_CONST
#define yyconst const
#if defined(__GNUC__) && __GNUC__ >= 3
#define yynoreturn __attribute__((__noreturn__))
#else
#define yynoreturn
#define yyconst
#endif
/* An opaque pointer. */
@ -393,7 +165,7 @@ struct yy_buffer_state
/* Size of input buffer in bytes, not including room for EOB
* characters.
*/
int yy_buf_size;
yy_size_t yy_buf_size;
/* Number of characters read into yy_ch_buf, not including EOB
* characters.
@ -421,7 +193,7 @@ struct yy_buffer_state
int yy_bs_lineno; /**< The line count. */
int yy_bs_column; /**< The column count. */
/* Whether to try to fill the input buffer when we reach the
* end of it.
*/
@ -432,25 +204,25 @@ struct yy_buffer_state
};
#endif /* !YY_STRUCT_YY_BUFFER_STATE */
void yyrestart ( FILE *input_file , yyscan_t yyscanner );
void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
void yypop_buffer_state ( yyscan_t yyscanner );
void hsql_restart (FILE *input_file ,yyscan_t yyscanner );
void hsql__switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
YY_BUFFER_STATE hsql__create_buffer (FILE *file,int size ,yyscan_t yyscanner );
void hsql__delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
void hsql__flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
void hsql_push_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
void hsql_pop_buffer_state (yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
YY_BUFFER_STATE hsql__scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
YY_BUFFER_STATE hsql__scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
YY_BUFFER_STATE hsql__scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
void *yyalloc ( yy_size_t , yyscan_t yyscanner );
void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
void yyfree ( void * , yyscan_t yyscanner );
void *hsql_alloc (yy_size_t ,yyscan_t yyscanner );
void *hsql_realloc (void *,yy_size_t ,yyscan_t yyscanner );
void hsql_free (void * ,yyscan_t yyscanner );
/* Begin user sect3 */
#define hsql_wrap(yyscanner) (/*CONSTCOND*/1)
#define hsql_wrap(n) 1
#define YY_SKIP_YYWRAP
#define yytext_ptr yytext_r
@ -473,50 +245,46 @@ void yyfree ( void * , yyscan_t yyscanner );
#define YY_EXTRA_TYPE void *
#endif
int yylex_init (yyscan_t* scanner);
int hsql_lex_init (yyscan_t* scanner);
int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
int hsql_lex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
/* Accessor methods to globals.
These are made visible to non-reentrant scanners for convenience. */
int yylex_destroy ( yyscan_t yyscanner );
int hsql_lex_destroy (yyscan_t yyscanner );
int yyget_debug ( yyscan_t yyscanner );
int hsql_get_debug (yyscan_t yyscanner );
void yyset_debug ( int debug_flag , yyscan_t yyscanner );
void hsql_set_debug (int debug_flag ,yyscan_t yyscanner );
YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
YY_EXTRA_TYPE hsql_get_extra (yyscan_t yyscanner );
void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
void hsql_set_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
FILE *yyget_in ( yyscan_t yyscanner );
FILE *hsql_get_in (yyscan_t yyscanner );
void yyset_in ( FILE * _in_str , yyscan_t yyscanner );
void hsql_set_in (FILE * in_str ,yyscan_t yyscanner );
FILE *yyget_out ( yyscan_t yyscanner );
FILE *hsql_get_out (yyscan_t yyscanner );
void yyset_out ( FILE * _out_str , yyscan_t yyscanner );
void hsql_set_out (FILE * out_str ,yyscan_t yyscanner );
int yyget_leng ( yyscan_t yyscanner );
int hsql_get_leng (yyscan_t yyscanner );
char *yyget_text ( yyscan_t yyscanner );
char *hsql_get_text (yyscan_t yyscanner );
int yyget_lineno ( yyscan_t yyscanner );
int hsql_get_lineno (yyscan_t yyscanner );
void yyset_lineno ( int _line_number , yyscan_t yyscanner );
void hsql_set_lineno (int line_number ,yyscan_t yyscanner );
int yyget_column ( yyscan_t yyscanner );
YYSTYPE * hsql_get_lval (yyscan_t yyscanner );
void yyset_column ( int _column_no , yyscan_t yyscanner );
void hsql_set_lval (YYSTYPE * yylval_param ,yyscan_t yyscanner );
YYSTYPE * yyget_lval ( yyscan_t yyscanner );
void yyset_lval ( YYSTYPE * yylval_param , yyscan_t yyscanner );
YYLTYPE *yyget_lloc ( yyscan_t yyscanner );
YYLTYPE *hsql_get_lloc (yyscan_t yyscanner );
void yyset_lloc ( YYLTYPE * yylloc_param , yyscan_t yyscanner );
void hsql_set_lloc (YYLTYPE * yylloc_param ,yyscan_t yyscanner );
/* Macros after this point can all be overridden by user definitions in
* section 1.
@ -524,18 +292,18 @@ void yyset_lval ( YYSTYPE * yylval_param , yyscan_t yyscanner );
#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int yywrap ( yyscan_t yyscanner );
extern "C" int hsql_wrap (yyscan_t yyscanner );
#else
extern int yywrap ( yyscan_t yyscanner );
extern int hsql_wrap (yyscan_t yyscanner );
#endif
#endif
#ifndef yytext_ptr
static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
#endif
#ifdef YY_NEED_STRLEN
static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
#endif
#ifndef YY_NO_INPUT
@ -563,10 +331,10 @@ static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1
extern int yylex \
(YYSTYPE * yylval_param, YYLTYPE * yylloc_param , yyscan_t yyscanner);
extern int hsql_lex \
(YYSTYPE * yylval_param,YYLTYPE * yylloc_param ,yyscan_t yyscanner);
#define YY_DECL int yylex \
#define YY_DECL int hsql_lex \
(YYSTYPE * yylval_param, YYLTYPE * yylloc_param , yyscan_t yyscanner)
#endif /* !YY_DECL */
@ -584,154 +352,9 @@ extern int yylex \
#undef YY_DECL
#endif
#ifndef hsql__create_buffer_ALREADY_DEFINED
#undef yy_create_buffer
#endif
#ifndef hsql__delete_buffer_ALREADY_DEFINED
#undef yy_delete_buffer
#endif
#ifndef hsql__scan_buffer_ALREADY_DEFINED
#undef yy_scan_buffer
#endif
#ifndef hsql__scan_string_ALREADY_DEFINED
#undef yy_scan_string
#endif
#ifndef hsql__scan_bytes_ALREADY_DEFINED
#undef yy_scan_bytes
#endif
#ifndef hsql__init_buffer_ALREADY_DEFINED
#undef yy_init_buffer
#endif
#ifndef hsql__flush_buffer_ALREADY_DEFINED
#undef yy_flush_buffer
#endif
#ifndef hsql__load_buffer_state_ALREADY_DEFINED
#undef yy_load_buffer_state
#endif
#ifndef hsql__switch_to_buffer_ALREADY_DEFINED
#undef yy_switch_to_buffer
#endif
#ifndef hsql_push_buffer_state_ALREADY_DEFINED
#undef yypush_buffer_state
#endif
#ifndef hsql_pop_buffer_state_ALREADY_DEFINED
#undef yypop_buffer_state
#endif
#ifndef hsql_ensure_buffer_stack_ALREADY_DEFINED
#undef yyensure_buffer_stack
#endif
#ifndef hsql_lex_ALREADY_DEFINED
#undef yylex
#endif
#ifndef hsql_restart_ALREADY_DEFINED
#undef yyrestart
#endif
#ifndef hsql_lex_init_ALREADY_DEFINED
#undef yylex_init
#endif
#ifndef hsql_lex_init_extra_ALREADY_DEFINED
#undef yylex_init_extra
#endif
#ifndef hsql_lex_destroy_ALREADY_DEFINED
#undef yylex_destroy
#endif
#ifndef hsql_get_debug_ALREADY_DEFINED
#undef yyget_debug
#endif
#ifndef hsql_set_debug_ALREADY_DEFINED
#undef yyset_debug
#endif
#ifndef hsql_get_extra_ALREADY_DEFINED
#undef yyget_extra
#endif
#ifndef hsql_set_extra_ALREADY_DEFINED
#undef yyset_extra
#endif
#ifndef hsql_get_in_ALREADY_DEFINED
#undef yyget_in
#endif
#ifndef hsql_set_in_ALREADY_DEFINED
#undef yyset_in
#endif
#ifndef hsql_get_out_ALREADY_DEFINED
#undef yyget_out
#endif
#ifndef hsql_set_out_ALREADY_DEFINED
#undef yyset_out
#endif
#ifndef hsql_get_leng_ALREADY_DEFINED
#undef yyget_leng
#endif
#ifndef hsql_get_text_ALREADY_DEFINED
#undef yyget_text
#endif
#ifndef hsql_get_lineno_ALREADY_DEFINED
#undef yyget_lineno
#endif
#ifndef hsql_set_lineno_ALREADY_DEFINED
#undef yyset_lineno
#endif
#ifndef hsql_get_column_ALREADY_DEFINED
#undef yyget_column
#endif
#ifndef hsql_set_column_ALREADY_DEFINED
#undef yyset_column
#endif
#ifndef hsql_wrap_ALREADY_DEFINED
#undef yywrap
#endif
#ifndef hsql_get_lval_ALREADY_DEFINED
#undef yyget_lval
#endif
#ifndef hsql_set_lval_ALREADY_DEFINED
#undef yyset_lval
#endif
#ifndef hsql_get_lloc_ALREADY_DEFINED
#undef yyget_lloc
#endif
#ifndef hsql_set_lloc_ALREADY_DEFINED
#undef yyset_lloc
#endif
#ifndef hsql_alloc_ALREADY_DEFINED
#undef yyalloc
#endif
#ifndef hsql_realloc_ALREADY_DEFINED
#undef yyrealloc
#endif
#ifndef hsql_free_ALREADY_DEFINED
#undef yyfree
#endif
#ifndef hsql_text_ALREADY_DEFINED
#undef yytext
#endif
#ifndef hsql_leng_ALREADY_DEFINED
#undef yyleng
#endif
#ifndef hsql_in_ALREADY_DEFINED
#undef yyin
#endif
#ifndef hsql_out_ALREADY_DEFINED
#undef yyout
#endif
#ifndef hsql__flex_debug_ALREADY_DEFINED
#undef yy_flex_debug
#endif
#ifndef hsql_lineno_ALREADY_DEFINED
#undef yylineno
#endif
#ifndef hsql_tables_fload_ALREADY_DEFINED
#undef yytables_fload
#endif
#ifndef hsql_tables_destroy_ALREADY_DEFINED
#undef yytables_destroy
#endif
#ifndef hsql_TABLES_NAME_ALREADY_DEFINED
#undef yyTABLES_NAME
#endif
#line 217 "flex_lexer.l"
#line 735 "flex_lexer.h"
#line 359 "flex_lexer.h"
#undef hsql_IN_HEADER
#endif /* hsql_HEADER_H */

3
src/sql/SQLStatement.h
View File

@ -19,7 +19,8 @@ namespace hsql {
kStmtExecute,
kStmtExport,
kStmtRename,
kStmtAlter
kStmtAlter,
kStmtShow
};
// Base struct for every SQL statement

26
src/sql/ShowStatement.h Normal file
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@ -0,0 +1,26 @@
#ifndef __SQLPARSER__SHOW_STATEMENT_H__
#define __SQLPARSER__SHOW_STATEMENT_H__
#include "SQLStatement.h"
// Note: Implementations of constructors and destructors can be found in statements.cpp.
namespace hsql {
enum ShowType {
kShowColumns,
kShowTables
};
// Represents SQL SHOW statements.
// Example "SHOW TABLES;"
struct ShowStatement : SQLStatement {
ShowStatement(ShowType type);
virtual ~ShowStatement();
ShowType type;
char* name;
};
} // namespace hsql
#endif

10
src/sql/statements.cpp
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@ -121,6 +121,16 @@ namespace hsql {
}
}
// ShowStatament
ShowStatement::ShowStatement(ShowType type) :
SQLStatement(kStmtShow),
type(type),
name(nullptr) {}
ShowStatement::~ShowStatement() {
free(name);
}
// SelectStatement.h
// OrderDescription

3
src/sql/statements.h
View File

@ -10,5 +10,6 @@
#include "DropStatement.h"
#include "PrepareStatement.h"
#include "ExecuteStatement.h"
#include "ShowStatement.h"
#endif // __SQLPARSER__STATEMENTS_H__
#endif // __SQLPARSER__STATEMENTS_H__

3
test/queries/queries-bad.sql
View File

@ -8,4 +8,5 @@
!CREATE TABLE "table" FROM TBL FILE 'students.tbl';SELECT 1
!CREATE TABLE "table" FROM TBL FILE 'students.tbl';1
!INSERT INTO test_table VALUESd (1, 2, 'test');
!SELECT * FROM t WHERE a = ? AND b = ?;SELECT 1;
!SELECT * FROM t WHERE a = ? AND b = ?;SELECT 1;
!SHOW COLUMNS;

4
test/queries/queries-good.sql
View File

@ -48,4 +48,6 @@ DEALLOCATE PREPARE prep;
# HINTS
SELECT * FROM test WITH HINT(NO_CACHE);
SELECT * FROM test WITH HINT(NO_CACHE, NO_SAMPLING);
SELECT * FROM test WITH HINT(NO_CACHE, SAMPLE_RATE(0.1), OMW(1.0, 'test'));
SELECT * FROM test WITH HINT(NO_CACHE, SAMPLE_RATE(0.1), OMW(1.0, 'test'));
SHOW TABLES;
SHOW COLUMNS students;

25
test/sql_tests.cpp
View File

@ -127,6 +127,31 @@ TEST(ReleaseStatementTest) {
}
}
TEST(ShowTableStatementTest) {
TEST_PARSE_SINGLE_SQL(
"SHOW TABLES;",
kStmtShow,
ShowStatement,
result,
stmt);
ASSERT_EQ(stmt->type, kShowTables);
ASSERT_NULL(stmt->name);
}
TEST(ShowColumnsStatementTest) {
TEST_PARSE_SINGLE_SQL(
"SHOW COLUMNS students;",
kStmtShow,
ShowStatement,
result,
stmt);
ASSERT_EQ(stmt->type, kShowColumns);
ASSERT_NOTNULL(stmt->name);
ASSERT_STREQ(stmt->name, "students");
}
SQLParserResult parse_and_move(std::string query) {
hsql::SQLParserResult result;