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yacc.y
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%{
// Copyright 2012, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// The MIT License (MIT)
// Copyright (c) 2016 Jerry Bai
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package sqlparser
import "bytes"
// SetParseTree to build ast.
func SetParseTree(yylex interface{}, stmt Statement) {
yylex.(*Tokenizer).ParseTree = stmt
}
// SetAllowComments set allow comments.
func SetAllowComments(yylex interface{}, allow bool) {
yylex.(*Tokenizer).AllowComments = allow
}
// ForceEOF force EOF.
func ForceEOF(yylex interface{}) {
yylex.(*Tokenizer).ForceEOF = true
}
var (
SHARE = []byte("share")
MODE = []byte("mode")
IF_BYTES = []byte("if")
VALUES_BYTES = []byte("values")
)
%}
%union {
empty struct{}
statement Statement
selStmt SelectStatement
setStmt SetStatement
showStmt ShowStatement
ddlStmt DDLStatement
byt byte
bytes []byte
bytes2 [][]byte
str string
boolean bool
selectExprs SelectExprs
selectExpr SelectExpr
columns Columns
colName *ColName
tableExprs TableExprs
tableExpr TableExpr
smTableExpr SimpleTableExpr
tableName *TableName
indexHints *IndexHints
expr Expr
boolExpr BoolExpr
valExpr ValExpr
tuple Tuple
valExprs ValExprs
values Values
subquery *Subquery
caseExpr *CaseExpr
funcExpr *FuncExpr
whens []*When
when *When
orderBy OrderBy
order *Order
limit *Limit
insRows InsertRows
updateExprs UpdateExprs
updateExpr *UpdateExpr
createDef CreateDefinition
createDefs CreateDefinitions
columnDef *ColumnDefinition
dataType *DataType
idxColName *IndexColName
idxColNames IndexColNames
optKeyVal *OptionKeyValue
optKeyVals OptionKeyValues
fiOAfCol *FirstOrAfterColumn
alterSpecs AlterSpecifications
alterSpec AlterSpecification
}
%token LEX_ERROR
%token <empty> SELECT INSERT UPDATE DELETE FROM WHERE GROUP HAVING ORDER BY LIMIT FOR
%token <empty> ALL DISTINCT AS EXISTS NULL ASC DESC VALUES INTO DUPLICATE KEY DEFAULT SET LOCK
%token <empty> SHOW EXPLAIN DESCRIBE
%token <bytes> ID STRING NUMBER VALUE_ARG COMMENTS
%token <empty> '(' '~'
%left <empty> UNION MINUS EXCEPT INTERSECT
%left <empty> ','
%left <empty> FULL JOIN STRAIGHT_JOIN LEFT RIGHT INNER OUTER CROSS NATURAL USE FORCE
%left <empty> ON
%left <empty> OR
%left <empty> AND
%right <empty> NOT
%left <empty> BETWEEN CASE WHEN THEN ELSE
//REGEXP
%left <empty> '=' '<' '>' LE GE NE NULL_SAFE_EQUAL IS LIKE IN
%left <empty> '|'
%left <empty> '&'
//%left <empty> SHIFT_LEFT SHIFT_RIGHT
%left <empty> '+' '-'
%left <empty> '*' '/' '%'
%left <empty> '^'
%nonassoc <empty> '.'
%left <empty> UNARY
%left <empty> END
// Transaction Tokens
%token <empty> BEGIN START TRANSACTION COMMIT ROLLBACK ISOLATION LEVEL READ COMMITTED UNCOMMITTED REPEATABLE SERIALIZABLE
// Charset Tokens
%token <empty> NAMES CHARSET CHARACTER COLLATION
%token <empty> ARMSCII8 ASCII BIG5 BINARY CP1250 CP1251 CP1256 CP1257 CP850 CP852 CP866 CP932
%token <empty> DEC8 EUCJPMS EUCKR GB2312 GBK GEOSTD8 GREEK HEBREW HP8 KEYBCS2 KOI8R KOI8U
%token <empty> LATIN1 LATIN2 LATIN5 LATIN7 MACCE MACROMAN SJIS SWE7 TIS620 UCS2 UJIS
%token <empty> UTF16 UTF16LE UTF32 UTF8 UTF8MB4
// Collation Tokens
%token <empty> ARMSCII8_GENERAL_CI ARMSCII8_BIN ASCII_GENERAL_CI ASCII_BIN BIG5_CHINESE_CI BIG5_BIN
%token <empty> CP1250_GENERAL_CI CP1250_BIN CP1251_GENERAL_CI CP1251_GENERAL_CS CP1251_BIN CP1256_GENERAL_CI CP1256_BIN CP1257_GENERAL_CI CP1257_BIN
%token <empty> CP850_GENERAL_CI CP850_BIN CP852_GENERAL_CI CP852_BIN CP866_GENERAL_CI CP866_BIN CP932_JAPANESE_CI CP932_BIN
%token <empty> DEC8_SWEDISH_CI DEC8_BIN EUCJPMS_JAPANESE_CI EUCJPMS_BIN EUCKR_KOREAN_CI EUCKR_BIN GB2312_CHINESE_CI GB2312_BIN GBK_CHINESE_CI GBK_BIN
%token <empty> GEOSTD8_GENERAL_CI GEOSTD8_BIN GREEK_GENERAL_CI GREEK_BIN HEBREW_GENERAL_CI HEBREW_BIN HP8_ENGLISH_CI HP8_BIN
%token <empty> KEYBCS2_GENERAL_CI KEYBCS2_BIN KOI8R_GENERAL_CI KOI8R_BIN KOI8U_GENERAL_CI KOI8U_BIN
%token <empty> LATIN1_GENERAL_CI LATIN1_GENERAL_CS LATIN1_BIN LATIN2_GENERAL_CI LATIN2_BIN LATIN5_TURKISH_CI LATIN5_BIN LATIN7_GENERAL_CI LATIN7_GENERAL_CS LATIN7_BIN
%token <empty> MACCE_GENERAL_CI MACCE_BIN MACROMAN_GENERAL_CI MACROMAN_BIN SJIS_JAPANESE_CI SJIS_BIN SWE7_SWEDISH_CI SWE7_BIN TIS620_THAI_CI TIS620_BIN
%token <empty> UCS2_GENERAL_CI UCS2_UNICODE_CI UCS2_BIN UJIS_JAPANESE_CI UJIS_BIN UTF16_GENERAL_CI UTF16_UNICODE_CI UTF16_BIN UTF16LE_GENERAL_CI UTF16LE_BIN
%token <empty> UTF32_GENERAL_CI UTF32_UNICODE_CI UTF32_BIN UTF8_GENERAL_CI UTF8_UNICODE_CI UTF8_BIN UTF8MB4_GENERAL_CI UTF8MB4_UNICODE_CI UTF8MB4_BIN
// Scope Tokens
%token <empty> SESSION GLOBAL
%token <empty> VARIABLES STATUS
%token <empty> DATABASES SCHEMAS DATABASE
%token <empty> STORAGE ENGINES
%token <empty> TABLES COLUMNS FIELDS PROCEDURE FUNCTION INDEXES KEYS TRIGGER TRIGGERS
%token <empty> PLUGINS PROCESSLIST SLAVE
%token <empty> PROFILES
// Replace
%token <empty> REPLACE
//offset
%token <empty> OFFSET
//collate
%token <empty> COLLATE
// DDL Tokens
%token <empty> CREATE ALTER DROP RENAME
%token <empty> TABLE INDEX VIEW TO IGNORE IF UNIQUE FULLTEXT USING
%token <empty> BTREE HASH
// Data Type Tokens
%token <empty> BIT TINYINT BOOL BOOLEAN SMALLINT MEDIUMINT INT INTEGER BIGINT REAL DOUBLE FLOAT DECIMAL
%token <empty> DATE TIME TIMESTAMP DATETIME YEAR
%token <empty> CHAR NCHAR VARCHAR NVARCHAR TINYTEXT TEXT MEDIUMTEXT LONGTEXT
%token <empty> VARBINARY TINYBLOB BLOB MEDIUMBLOB LONGBLOB
%token <empty> ENUM AUTO_INCREMENT ENGINE PRIMARY REFERENCES COMMENT
%token <empty> COLUMN_FORMAT FIXED DYNAMIC
%token <empty> DISK MEMORY
%token <empty> MATCH PARTIAL SIMPLE
%token <empty> RESTRICT CASCADE
%token <empty> NO ACTION
%token <empty> UNSIGNED ZEROFILL
%token <empty> CONSTRAINT FOREIGN
%token <empty> FIRST AFTER
%token <empty> ADD COLUMN CHANGE MODIFY
%token <empty> ENABLE DISABLE
%token <empty> KILL QUERY CONNECTION
// Functin
%token <empty> POSITION
%start any_command
%type <statement> command
%type <selStmt> select_statement
%type <setStmt> set_statement
%type <showStmt> show_statement describe_statement
%type <ddlStmt> create_statement alter_statement rename_statement drop_statement
%type <statement> insert_statement update_statement delete_statement replace_statement
%type <statement> begin_statement commit_statement rollback_statement
%type <statement> use_statement explain_statement admin_statement
%type <bytes2> comments_list_opt comments_list
%type <str> union_op
%type <str> distinct_opt
%type <str> ignore_opt
%type <selectExprs> select_expression_list
%type <selectExpr> select_expression
%type <bytes> as_opt
%type <expr> expression
%type <tableExprs> table_expression_list
%type <tableExpr> table_expression
%type <str> join_type
%type <smTableExpr> simple_table_expression
%type <tableName> table_name
%type <indexHints> index_hint_list
%type <bytes2> sql_id_list
%type <boolExpr> where_expression_opt
%type <boolExpr> boolean_expression condition
%type <str> compare
%type <insRows> row_list
%type <valExpr> value value_expression
%type <tuple> tuple
%type <valExprs> value_expression_list
%type <values> tuple_list
%type <bytes> keyword_as_func
%type <subquery> subquery
%type <byt> unary_operator
%type <colName> column_name
%type <caseExpr> case_expression
%type <whens> when_expression_list
%type <when> when_expression
%type <funcExpr> function_expression
%type <valExpr> value_expression_opt else_expression_opt
%type <valExprs> group_by_opt
%type <boolExpr> having_opt
%type <orderBy> order_by_opt order_list
%type <order> order
%type <str> asc_desc_opt
%type <limit> limit_opt
%type <str> lock_opt
%type <columns> column_list_opt column_list
%type <updateExprs> on_dup_opt
%type <updateExprs> update_list
%type <updateExpr> update_expression
%type <expr> where_or_like_opt
%type <empty> exists_opt not_exists_opt
%type <bytes> index_category_opt index_type index_type_opt index_option_opt
%type <idxColName> index_column_name
%type <idxColNames> index_column_list
%type <bytes> sql_id
// %type <empty> force_eof
%type <bytes> charset_words collate_words
%type <bytes> isolation_level
%type <bytes> scope_opt
%type <valExpr> default_value column_comment_opt
%type <bytes> unique_or_primary_opt column_format_opt column_storage_opt
%type <bytes> reference_definition reference_definition_opt reference_match_opt
%type <bytes> reference_on_delete_or_update_opt reference_option reference_option_opt
%type <bytes> data_type_charset_opt data_type_collate_opt
%type <createDef> create_definition
%type <createDefs> create_definition_list
%type <alterSpec> alter_specification
%type <alterSpecs> alter_specification_list alter_specification_list_opt
%type <valExprs> value_list
%type <boolean> not_null auto_increment_opt data_type_unsigned_opt data_type_zerofill_opt data_type_binary_opt
%type <columnDef> column_definition
%type <dataType> data_type
%type <bytes> constraint_opt
%type <optKeyVal> table_option
%type <optKeyVals> table_option_list table_option_list_opt
%type <fiOAfCol> first_or_after_column first_or_after_column_opt
%%
any_command:
command
{
SetParseTree(yylex, $1)
}
command:
select_statement
{ $$ = $1 }
| set_statement
{ $$ = $1 }
| show_statement
{ $$ = $1 }
| describe_statement
{ $$ = $1 }
| insert_statement
| update_statement
| delete_statement
| replace_statement
| explain_statement
| create_statement
{ $$ = $1 }
| alter_statement
{ $$ = $1 }
| rename_statement
{ $$ = $1 }
| drop_statement
{ $$ = $1 }
| begin_statement
| commit_statement
| rollback_statement
| use_statement
| admin_statement
| comments_list
{ $$ = nil }
select_statement:
SELECT comments_list_opt distinct_opt select_expression_list limit_opt
{
$$ = &SimpleSelect{Comments: Comments($2), Distinct: $3, SelectExprs: $4, Limit: $5}
}
| SELECT comments_list_opt distinct_opt select_expression_list FROM table_expression_list where_expression_opt group_by_opt having_opt order_by_opt limit_opt lock_opt
{
$$ = &Select{Comments: Comments($2), Distinct: $3, SelectExprs: $4, From: $6, Where: NewWhere(AST_WHERE, $7), GroupBy: GroupBy($8), Having: NewWhere(AST_HAVING, $9), OrderBy: $10, Limit: $11, Lock: $12}
}
| select_statement union_op select_statement %prec UNION
{
$$ = &Union{Type: $2, Left: $1, Right: $3}
}
insert_statement:
INSERT comments_list_opt ignore_opt INTO table_name column_list_opt row_list on_dup_opt
{
$$ = &Insert{Comments: Comments($2), Ignore:$3, Table: $5, Columns: $6, Rows: $7, OnDup: OnDup($8)}
}
| INSERT comments_list_opt ignore_opt INTO table_name SET update_list on_dup_opt
{
cols := make(Columns, 0, len($7))
vals := make(ValTuple, 0, len($7))
for _, col := range $7 {
cols = append(cols, &NonStarExpr{Expr: col.Name})
vals = append(vals, col.Expr)
}
$$ = &Insert{Comments: Comments($2), Ignore:$3, Table: $5, Columns: cols, Rows: Values{vals}, OnDup: OnDup($8)}
}
replace_statement:
REPLACE comments_list_opt INTO table_name column_list_opt row_list
{
$$ = &Replace{Comments: Comments($2), Table: $4, Columns: $5, Rows: $6}
}
| REPLACE comments_list_opt INTO table_name SET update_list
{
cols := make(Columns, 0, len($6))
vals := make(ValTuple, 0, len($6))
for _, col := range $6 {
cols = append(cols, &NonStarExpr{Expr: col.Name})
vals = append(vals, col.Expr)
}
$$ = &Replace{Comments: Comments($2), Table: $4, Columns: cols, Rows: Values{vals}}
}
update_statement:
UPDATE comments_list_opt table_name SET update_list where_expression_opt order_by_opt limit_opt
{
$$ = &Update{Comments: Comments($2), Table: $3, Exprs: $5, Where: NewWhere(AST_WHERE, $6), OrderBy: $7, Limit: $8}
}
delete_statement:
DELETE comments_list_opt FROM table_name where_expression_opt order_by_opt limit_opt
{
$$ = &Delete{Comments: Comments($2), Table: $4, Where: NewWhere(AST_WHERE, $5), OrderBy: $6, Limit: $7}
}
explain_statement:
EXPLAIN select_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN insert_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN update_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN replace_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN delete_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN set_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN show_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN describe_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN create_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN alter_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN rename_statement
{
$$= &Explain{Statement: $2}
}
| EXPLAIN drop_statement
{
$$= &Explain{Statement: $2}
}
set_statement:
SET comments_list_opt scope_opt update_list
{
$$ = &SetVariable{
Comments: Comments($2),
Scope:string($3),
Exprs: $4,
}
}
| SET comments_list_opt CHARACTER SET charset_words
{
$$ = &SetCharset{
Comments: Comments($2),
Charset: string($5),
}
}
| SET comments_list_opt CHARSET charset_words
{
$$ = &SetCharset{
Comments: Comments($2),
Charset: string($4),
}
}
| SET comments_list_opt NAMES charset_words
{
$$ = &SetNames{
Comments: Comments($2),
Names: string($4),
}
}
| SET comments_list_opt NAMES charset_words COLLATE STRING
{
$$ = &SetNames{
Comments: Comments($2),
Names: string($4),
Collate: string($6),
}
}
| SET comments_list_opt scope_opt TRANSACTION ISOLATION LEVEL isolation_level
{
$$ = &SetTransactionIsolationLevel{
Comments: Comments($2),
Scope: string($3),
IsolationLevel: string($7),
}
}
begin_statement:
BEGIN
{
$$ = &Begin{}
}
| START TRANSACTION
{
$$ = &Begin{}
}
commit_statement:
COMMIT
{
$$ = &Commit{}
}
rollback_statement:
ROLLBACK
{
$$ = &Rollback{}
}
use_statement:
USE sql_id
{
$$ = &UseDB{DB : string($2)}
}
admin_statement:
KILL NUMBER
{
$$ = &KillConnection{ConnectionID: NumVal($2)}
}
| KILL CONNECTION NUMBER
{
$$ = &KillConnection{ConnectionID: NumVal($3)}
}
| KILL QUERY NUMBER
{
$$ = &KillQuery{ConnectionID: NumVal($3)}
}
create_statement:
CREATE comments_list_opt TABLE not_exists_opt table_name '(' create_definition_list ')' table_option_list_opt
{
$$ = &CreateTable{Comments : Comments($2), Table: $5, CreateDefs: $7, TableOptions: $9 }
}
| CREATE comments_list_opt index_category_opt INDEX sql_id index_type_opt ON table_name '(' index_column_list ')' index_option_opt
{
$$ = &CreateIndex{Comments : Comments($2), IndexCategory: $3, Name: $5, IndexType: $6, Table: $8, IndexColumns: $10, IndexOption: $12 }
}
alter_statement:
ALTER comments_list_opt ignore_opt TABLE table_name alter_specification_list_opt
{
$$ = &AlterTable{Comments : Comments($2), Ignore: $3, Table: $5, AlterSpecs: $6}
}
rename_statement:
RENAME comments_list_opt TABLE table_name TO table_name
{
$$ = &RenameTable{Comments : Comments($2), OldName: $4, NewName: $6}
}
drop_statement:
DROP comments_list_opt TABLE exists_opt table_name reference_option_opt
{
$$ = &DropTable{Comments : Comments($2), Name: $5, RefOption: $6}
}
| DROP comments_list_opt INDEX sql_id ON table_name
{
$$ = &DropIndex{Comments : Comments($2), Name: $4, Table: $6}
}
show_statement:
SHOW comments_list_opt CHARACTER SET where_or_like_opt
{
$$ = &ShowCharset{Comments : Comments($2), LikeOrWhere : $5}
}
| SHOW comments_list_opt CHARSET where_or_like_opt
{
$$ = &ShowCharset{Comments : Comments($2), LikeOrWhere : $4}
}
| SHOW comments_list_opt COLLATION where_or_like_opt
{
$$ = &ShowCollation{Comments : Comments($2), LikeOrWhere : $4}
}
| SHOW comments_list_opt scope_opt VARIABLES where_or_like_opt
{
$$ = &ShowVariables{Comments : Comments($2), Scope: string($3), LikeOrWhere : $5}
}
| SHOW comments_list_opt scope_opt STATUS where_or_like_opt
{
$$ = &ShowStatus{Comments : Comments($2), Scope: string($3), LikeOrWhere : $5}
}
| SHOW comments_list_opt DATABASES where_or_like_opt
{
$$ = &ShowDatabases{Comments : Comments($2), LikeOrWhere : $4}
}
| SHOW comments_list_opt SCHEMAS where_or_like_opt
{
$$ = &ShowDatabases{Comments : Comments($2), LikeOrWhere : $4}
}
| SHOW comments_list_opt TABLES where_or_like_opt
{
$$ = &ShowTables{Comments : Comments($2), LikeOrWhere : $4}
}
| SHOW comments_list_opt TABLES FROM table_name where_or_like_opt
{
$$ = &ShowTables{Comments : Comments($2), From : $5, LikeOrWhere : $6}
}
| SHOW comments_list_opt FULL TABLES where_or_like_opt
{
$$ = &ShowFullTables{Comments : Comments($2), LikeOrWhere : $5}
}
| SHOW comments_list_opt FULL TABLES FROM table_name where_or_like_opt
{
$$ = &ShowFullTables{Comments : Comments($2), From : $6, LikeOrWhere : $7}
}
| SHOW comments_list_opt TABLE STATUS where_or_like_opt
{
$$ = &ShowTableStatus{Comments : Comments($2), LikeOrWhere : $5}
}
| SHOW comments_list_opt TABLE STATUS FROM table_name where_or_like_opt
{
$$ = &ShowTableStatus{Comments : Comments($2), From : $6, LikeOrWhere : $7}
}
| SHOW comments_list_opt COLUMNS FROM table_name where_or_like_opt
{
$$ = &ShowColumns{Comments : Comments($2), From : $5, LikeOrWhere : $6}
}
| SHOW comments_list_opt FIELDS FROM table_name where_or_like_opt
{
$$ = &ShowColumns{Comments : Comments($2), From : $5, LikeOrWhere : $6}
}
| SHOW comments_list_opt FULL COLUMNS FROM table_name where_or_like_opt
{
$$ = &ShowFullColumns{Comments : Comments($2), From : $6, LikeOrWhere : $7}
}
| SHOW comments_list_opt FULL FIELDS FROM table_name where_or_like_opt
{
$$ = &ShowFullColumns{Comments : Comments($2), From : $6, LikeOrWhere : $7}
}
| SHOW comments_list_opt PROCEDURE STATUS where_or_like_opt
{
$$ = &ShowProcedureStatus{Comments : Comments($2), LikeOrWhere : $5}
}
| SHOW comments_list_opt FUNCTION STATUS where_or_like_opt
{
$$ = &ShowFunctionStatus{Comments : Comments($2), LikeOrWhere : $5}
}
| SHOW comments_list_opt INDEX FROM table_name where_expression_opt
{
$$ = &ShowIndex{Comments : Comments($2), From : $5, Where : $6}
}
| SHOW comments_list_opt INDEXES FROM table_name where_expression_opt
{
$$ = &ShowIndex{Comments : Comments($2), From : $5, Where : $6}
}
| SHOW comments_list_opt KEYS FROM table_name where_expression_opt
{
$$ = &ShowIndex{Comments : Comments($2), From : $5, Where : $6}
}
| SHOW comments_list_opt TRIGGERS FROM table_name where_or_like_opt
{
$$ = &ShowTriggers{Comments : Comments($2), From : $5, LikeOrWhere : $6}
}
| SHOW comments_list_opt CREATE DATABASE table_name
{
$$ = &ShowCreateDatabase{Comments : Comments($2), Name : $5}
}
| SHOW comments_list_opt CREATE TABLE table_name
{
$$ = &ShowCreateTable{Comments : Comments($2), Name : $5}
}
| SHOW comments_list_opt CREATE VIEW table_name
{
$$ = &ShowCreateView{Comments : Comments($2), Name : $5}
}
| SHOW comments_list_opt CREATE PROCEDURE table_name
{
$$ = &ShowCreateProcedure{Comments : Comments($2), Name : $5}
}
| SHOW comments_list_opt CREATE FUNCTION table_name
{
$$ = &ShowCreateFunction{Comments : Comments($2), Name : $5}
}
| SHOW comments_list_opt CREATE TRIGGER table_name
{
$$ = &ShowCreateTrigger{Comments : Comments($2), Name : $5}
}
| SHOW comments_list_opt PROCESSLIST
{
$$ = &ShowProcessList{Comments : Comments($2)}
}
| SHOW comments_list_opt FULL PROCESSLIST
{
$$ = &ShowFullProcessList{Comments : Comments($2)}
}
| SHOW comments_list_opt SLAVE STATUS
{
$$ = &ShowSlaveStatus{Comments : Comments($2)}
}
| SHOW ENGINES
{
$$ = &ShowEngines{}
}
| SHOW STORAGE ENGINES
{
$$ = &ShowEngines{}
}
| SHOW PLUGINS
{
$$ = &ShowPlugins{}
}
| SHOW PROFILES
{
$$ = &ShowProfiles{}
}
describe_statement:
DESCRIBE comments_list_opt table_name
{
$$ = &ShowColumns{Comments : Comments($2), From : $3}
}
comments_list_opt:
{
SetAllowComments(yylex, true)
}
comments_list
{
$$ = $2
SetAllowComments(yylex, false)
}
comments_list:
{
$$ = nil
}
| comments_list COMMENTS
{
$$ = append($1, $2)
}
union_op:
UNION
{
$$ = AST_UNION
}
| UNION ALL
{
$$ = AST_UNION_ALL
}
| MINUS
{
$$ = AST_SET_MINUS
}
| EXCEPT
{
$$ = AST_EXCEPT
}
| INTERSECT
{
$$ = AST_INTERSECT
}
distinct_opt:
{
$$ = ""
}
| DISTINCT
{
$$ = AST_DISTINCT
}
select_expression_list:
select_expression
{
$$ = SelectExprs{$1}
}
| select_expression_list ',' select_expression
{
$$ = append($$, $3)
}
select_expression:
'*'
{
$$ = &StarExpr{}
}
| ID '.' '*'
{
$$ = &StarExpr{TableName: bytes.ToLower($1)}
}
| expression as_opt
{
$$ = &NonStarExpr{Expr: $1, As: $2}
}
expression:
boolean_expression
{
$$ = $1
}
| value_expression
{
$$ = $1
}
as_opt:
{
$$ = nil
}
| sql_id
{
$$ = $1
}
| AS sql_id
{
$$ = $2
}
table_expression_list:
table_expression
{
$$ = TableExprs{$1}
}
| table_expression_list ',' table_expression
{
$$ = append($$, $3)
}
table_expression:
simple_table_expression as_opt index_hint_list
{
$$ = &AliasedTableExpr{Expr:$1, As: $2, Hints: $3}
}
| '(' table_expression ')'
{
$$ = &ParenTableExpr{Expr: $2}
}
| table_expression join_type table_expression ON boolean_expression %prec JOIN
{
$$ = &JoinTableExpr{LeftExpr: $1, Join: $2, RightExpr: $3, On: $5}
}
join_type:
JOIN
{
$$ = AST_JOIN
}
| STRAIGHT_JOIN
{
$$ = AST_STRAIGHT_JOIN
}
| LEFT JOIN
{
$$ = AST_LEFT_JOIN
}
| LEFT OUTER JOIN
{
$$ = AST_LEFT_JOIN
}
| RIGHT JOIN
{
$$ = AST_RIGHT_JOIN
}
| RIGHT OUTER JOIN
{
$$ = AST_RIGHT_JOIN
}
| INNER JOIN
{
$$ = AST_JOIN
}
| CROSS JOIN
{
$$ = AST_CROSS_JOIN
}
| NATURAL JOIN
{
$$ = AST_NATURAL_JOIN
}
simple_table_expression:
table_name
{
$$ = $1
}
| subquery
{
$$ = $1
}
table_name:
sql_id
{
$$ = &TableName{Name: $1}
}
| sql_id '.' sql_id
{
$$ = &TableName{Qualifier: $1, Name: $3}
}
index_hint_list:
{
$$ = nil
}
| USE INDEX '(' sql_id_list ')'
{
$$ = &IndexHints{Type: AST_USE, Indexes: $4}
}
| IGNORE INDEX '(' sql_id_list ')'
{
$$ = &IndexHints{Type: AST_IGNORE, Indexes: $4}
}
| FORCE INDEX '(' sql_id_list ')'
{
$$ = &IndexHints{Type: AST_FORCE, Indexes: $4}
}
sql_id_list:
sql_id
{
$$ = [][]byte{$1}
}
| sql_id_list ',' sql_id
{
$$ = append($1, $3)
}
value_list:
value
{
$$ = ValExprs{$1}
}
| value_list ',' value
{
$$ = append($1, $3)
}
where_expression_opt:
{
$$ = nil
}
| WHERE boolean_expression
{
$$ = $2
}
boolean_expression:
condition
| boolean_expression AND boolean_expression
{
$$ = &AndExpr{Left: $1, Right: $3}
}
| boolean_expression OR boolean_expression
{
$$ = &OrExpr{Left: $1, Right: $3}
}
| NOT boolean_expression
{
$$ = &NotExpr{Expr: $2}
}
| '(' boolean_expression ')'
{
$$ = &ParenBoolExpr{Expr: $2}
}
condition:
value_expression compare value_expression
{
$$ = &ComparisonExpr{Left: $1, Operator: $2, Right: $3}
}
| value_expression IN tuple
{
$$ = &ComparisonExpr{Left: $1, Operator: AST_IN, Right: $3}
}
| value_expression NOT IN tuple
{
$$ = &ComparisonExpr{Left: $1, Operator: AST_NOT_IN, Right: $4}
}
| value_expression LIKE value_expression
{
$$ = &ComparisonExpr{Left: $1, Operator: AST_LIKE, Right: $3}
}
| value_expression NOT LIKE value_expression
{
$$ = &ComparisonExpr{Left: $1, Operator: AST_NOT_LIKE, Right: $4}
}
| value_expression BETWEEN value_expression AND value_expression
{
$$ = &RangeCond{Left: $1, Operator: AST_BETWEEN, From: $3, To: $5}
}
| value_expression NOT BETWEEN value_expression AND value_expression
{
$$ = &RangeCond{Left: $1, Operator: AST_NOT_BETWEEN, From: $4, To: $6}
}
| value_expression IS NULL
{
$$ = &NullCheck{Operator: AST_IS_NULL, Expr: $1}
}
| value_expression IS NOT NULL
{
$$ = &NullCheck{Operator: AST_IS_NOT_NULL, Expr: $1}
}
| EXISTS subquery
{
$$ = &ExistsExpr{Subquery: $2}
}
compare:
'='
{
$$ = AST_EQ
}