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parser.y
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/*
Copyright 2017 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
%{
package parser
import (
"fmt"
"strings"
)
func setParseTree(yylex interface{}, stmt Statement) {
yylex.(*Tokenizer).ParseTree = stmt
}
func setAllowComments(yylex interface{}, allow bool) {
yylex.(*Tokenizer).AllowComments = allow
}
func setDDL(yylex interface{}, ddl *DDL) {
yylex.(*Tokenizer).partialDDL = ddl
}
func incNesting(yylex interface{}) bool {
yylex.(*Tokenizer).nesting++
if yylex.(*Tokenizer).nesting == 200 {
return true
}
return false
}
func decNesting(yylex interface{}) {
yylex.(*Tokenizer).nesting--
}
// forceEOF forces the lexer to end prematurely. Not all SQL statements
// are supported by the Parser, thus calling forceEOF will make the lexer
// return EOF early.
func forceEOF(yylex interface{}) {
yylex.(*Tokenizer).ForceEOF = true
}
%}
%union {
empty struct{}
statement Statement
selStmt SelectStatement
ddl *DDL
ins *Insert
byt byte
bytes []byte
bytes2 [][]byte
str string
strs []string
selectExprs SelectExprs
selectExpr SelectExpr
columns Columns
partitions Partitions
colName *ColName
newQualifierColName *NewQualifierColName
tableExprs TableExprs
tableExpr TableExpr
joinCondition JoinCondition
tableName TableName
tableNames TableNames
indexHints *IndexHints
expr Expr
exprs Exprs
boolVal BoolVal
boolVals []BoolVal
colTuple ColTuple
values Values
valTuple ValTuple
subquery *Subquery
whens []*When
when *When
orderBy OrderBy
order *Order
limit *Limit
updateExprs UpdateExprs
setExprs SetExprs
updateExpr *UpdateExpr
setExpr *SetExpr
colIdent ColIdent
colIdents []ColIdent
tableIdent TableIdent
convertType *ConvertType
aliasedTableName *AliasedTableExpr
TableSpec *TableSpec
columnType ColumnType
colKeyOpt ColumnKeyOption
optVal *SQLVal
defaultValueOrExpression DefaultValueOrExpression
LengthScaleOption LengthScaleOption
columnDefinition *ColumnDefinition
checkDefinition *CheckDefinition
indexDefinition *IndexDefinition
indexInfo *IndexInfo
indexOption *IndexOption
indexOptions []*IndexOption
indexPartition *IndexPartition
indexColumn IndexColumn
indexColumns []IndexColumn
indexColumnsOrExpression IndexColumnsOrExpression
foreignKeyDefinition *ForeignKeyDefinition
partDefs []*PartitionDefinition
partDef *PartitionDefinition
partSpec *PartitionSpec
vindexParam VindexParam
vindexParams []VindexParam
showFilter *ShowFilter
sequence *Sequence
blockStatement []Statement
localVariable *LocalVariable
localVariables []*LocalVariable
arrayConstructor *ArrayConstructor
arrayElements ArrayElements
arrayElement ArrayElement
tableOptions map[string]string
overExpr *OverExpr
partitionBy PartitionBy
partition *Partition
}
%token LEX_ERROR
%left <bytes> UNION
%token <bytes> SELECT STREAM INSERT UPDATE DELETE FROM WHERE GROUP HAVING ORDER BY LIMIT OFFSET FOR DECLARE
%token <bytes> ALL DISTINCT AS EXISTS ASC DESC INTO DUPLICATE DEFAULT SRID SET LOCK KEYS
%token <bytes> ROWID STRICT
%token <bytes> VALUES LAST_INSERT_ID
%token <bytes> NEXT VALUE SHARE MODE
%token <bytes> SQL_NO_CACHE SQL_CACHE
%left <bytes> JOIN STRAIGHT_JOIN LEFT RIGHT INNER OUTER CROSS NATURAL USE FORCE
%left <bytes> ON USING
%token <empty> '(' ',' ')'
%token <bytes> ID HEX STRING UNICODE_STRING INTEGRAL FLOAT HEXNUM VALUE_ARG LIST_ARG COMMENT COMMENT_KEYWORD BIT_LITERAL
%token <bytes> NULL TRUE FALSE
%token <bytes> OFF
%token <bytes> MAX
// Precedence dictated by mysql. But the vitess grammar is simplified.
// Some of these operators don't conflict in our situation. Nevertheless,
// it's better to have these listed in the correct order. Also, we don't
// support all operators yet.
%left <bytes> OR
%left <bytes> AND
%right <bytes> NOT '!'
%left <bytes> BETWEEN CASE WHEN THEN ELSE END
%left <bytes> '=' '<' '>' LE GE NE NULL_SAFE_EQUAL IS LIKE REGEXP IN
%left <bytes> POSIX_REGEX POSIX_REGEX_CI POSIX_NOT_REGEX POSIX_NOT_REGEX_CI
%left <bytes> '|'
%left <bytes> '&'
%left <bytes> SHIFT_LEFT SHIFT_RIGHT
%left <bytes> '+' '-'
%left <bytes> '*' '/' DIV '%' MOD
%left <bytes> '^'
%right <bytes> '~' UNARY
%left <bytes> COLLATE
%right <bytes> BINARY UNDERSCORE_BINARY
%right <bytes> INTERVAL
%nonassoc <bytes> '.'
// There is no need to define precedence for the JSON
// operators because the syntax is restricted enough that
// they don't cause conflicts.
%token <empty> JSON_EXTRACT_OP JSON_UNQUOTE_EXTRACT_OP
// DDL Tokens
%token <bytes> CREATE ALTER DROP RENAME ANALYZE ADD
%token <bytes> SCHEMA TABLE INDEX MATERIALIZED VIEW TO IGNORE IF PRIMARY COLUMN CONSTRAINT REFERENCES SPATIAL FULLTEXT FOREIGN KEY_BLOCK_SIZE POLICY WHILE
%right <bytes> UNIQUE KEY
%token <bytes> SHOW DESCRIBE EXPLAIN DATE ESCAPE REPAIR OPTIMIZE TRUNCATE
%token <bytes> MAXVALUE PARTITION REORGANIZE LESS THAN PROCEDURE TRIGGER TYPE
%token <bytes> VINDEX VINDEXES
%token <bytes> STATUS VARIABLES
%token <bytes> RESTRICT CASCADE NO ACTION
%token <bytes> PERMISSIVE RESTRICTIVE PUBLIC CURRENT_USER SESSION_USER
%token <bytes> PAD_INDEX FILLFACTOR IGNORE_DUP_KEY STATISTICS_NORECOMPUTE STATISTICS_INCREMENTAL ALLOW_ROW_LOCKS ALLOW_PAGE_LOCKS
%token <bytes> BEFORE AFTER EACH ROW SCROLL CURSOR OPEN CLOSE FETCH PRIOR FIRST LAST DEALLOCATE INSTEAD OF
%token <bytes> DEFERRABLE INITIALLY IMMEDIATE DEFERRED
%token <bytes> CONCURRENTLY
%token <bytes> SQL SECURITY
// Transaction Tokens
%token <bytes> BEGIN START TRANSACTION COMMIT ROLLBACK
// Type Tokens
%token <bytes> BIT TINYINT SMALLINT SMALLSERIAL MEDIUMINT INT INTEGER SERIAL BIGINT BIGSERIAL INTNUM
%token <bytes> REAL DOUBLE PRECISION FLOAT_TYPE DECIMAL NUMERIC SMALLMONEY MONEY
%token <bytes> TIME TIMESTAMP DATETIME YEAR DATETIMEOFFSET DATETIME2 SMALLDATETIME
%token <bytes> CHAR VARCHAR VARYING BOOL CHARACTER VARBINARY NCHAR NVARCHAR NTEXT UUID
%token <bytes> TEXT TINYTEXT MEDIUMTEXT LONGTEXT CITEXT
%token <bytes> BLOB TINYBLOB MEDIUMBLOB LONGBLOB JSON JSONB ENUM
%token <bytes> GEOMETRY POINT LINESTRING POLYGON GEOMETRYCOLLECTION MULTIPOINT MULTILINESTRING MULTIPOLYGON
%token <bytes> VARIADIC ARRAY
%token <bytes> NOW GETDATE
%token <bytes> BPCHAR
// Operator Class Tokens
%right <bytes> TEXT_PATTERN_OPS
// Type Modifiers
%token <bytes> NULLX AUTO_INCREMENT APPROXNUM SIGNED UNSIGNED ZEROFILL ZONE AUTOINCREMENT
// Supported SHOW tokens
%token <bytes> DATABASES TABLES VITESS_KEYSPACES VITESS_SHARDS VITESS_TABLETS VSCHEMA_TABLES EXTENDED FULL PROCESSLIST
// SET tokens
%token <bytes> NAMES CHARSET GLOBAL SESSION ISOLATION LEVEL READ WRITE ONLY REPEATABLE COMMITTED UNCOMMITTED SERIALIZABLE NEW
// SET option tokens
%token <bytes> CONCAT_NULL_YIELDS_NULL CURSOR_CLOSE_ON_COMMIT QUOTED_IDENTIFIER ARITHABORT FMTONLY NOCOUNT NOEXEC
%token <bytes> NUMERIC_ROUNDABORT ANSI_DEFAULTS ANSI_NULL_DFLT_OFF ANSI_NULL_DFLT_ON ANSI_NULLS ANSI_PADDING ANSI_WARNINGS
%token <bytes> FORCEPLAN SHOWPLAN_ALL SHOWPLAN_TEXT SHOWPLAN_XML IMPLICIT_TRANSACTIONS REMOTE_PROC_TRANSACTIONS XACT_ABORT
// Functions
%token <bytes> CURRENT_TIMESTAMP DATABASE CURRENT_DATE
%token <bytes> CURRENT_TIME LOCALTIME LOCALTIMESTAMP
%token <bytes> UTC_DATE UTC_TIME UTC_TIMESTAMP
%token <bytes> REPLACE
%token <bytes> CONVERT CAST
%token <bytes> SUBSTR SUBSTRING
%token <bytes> GROUP_CONCAT SEPARATOR
%token <bytes> INHERIT
%token <bytes> LEAD LAG
// Match
%token <bytes> MATCH AGAINST BOOLEAN LANGUAGE WITH WITHOUT PARSER QUERY EXPANSION
// MySQL reserved words that are unused by this grammar will map to this token.
%token <bytes> UNUSED
// MySQL PostgreSQL GENERATED ALWAYS AS
%token <bytes> VIRTUAL STORED
// PostgreSQL GENERATED AS IDENTITY
%token <bytes> GENERATED ALWAYS IDENTITY
// sequence
%token <bytes> SEQUENCE INCREMENT MINVALUE CACHE CYCLE OWNED NONE
// SQL Server PRIMARY KEY CLUSTERED
%token <bytes> CLUSTERED NONCLUSTERED
// SQL Server NOT FOR REPLICATION
%token <bytes> REPLICATION
// SQL SERVER COLUMNSTORE
%token <bytes> COLUMNSTORE
// index
%token <bytes> INCLUDE
// table hint
%token <bytes> HOLDLOCK NOLOCK NOWAIT PAGLOCK ROWLOCK TABLELOCK
// SQL SECURITY
%token <bytes> DEFINER INVOKER
%type <statement> command
%type <selStmt> select_statement base_select union_lhs union_rhs
%type <statement> stream_statement insert_statement update_statement delete_statement set_statement declare_statement cursor_statement while_statement if_statement
%type <statement> create_statement alter_statement rename_statement drop_statement truncate_statement
%type <statement> set_option_statement set_bool_option_statement
%type <ddl> create_table_prefix
%type <statement> analyze_statement show_statement use_statement other_statement
%type <statement> begin_statement commit_statement rollback_statement
%type <bytes2> comment_opt comment_list
%type <str> union_op insert_or_replace
%type <str> distinct_opt straight_join_opt cache_opt match_option separator_opt
%type <expr> like_escape_opt
%type <selectExprs> select_expression_list select_expression_list_opt
%type <selectExpr> select_expression
%type <expr> expression
%type <tableExprs> from_opt table_references
%type <tableExpr> table_reference table_factor join_table
%type <joinCondition> join_condition join_condition_opt on_expression_opt
%type <tableNames> table_name_list
%type <str> inner_join outer_join straight_join natural_join
%type <tableName> table_name into_table_name
%type <aliasedTableName> aliased_table_name
%type <indexHints> index_hint_list
%type <expr> where_expression_opt
%type <expr> condition
%type <boolVal> boolean_value
%type <str> compare
%type <ins> insert_data
%type <expr> value value_expression
%type <expr> function_call_keyword function_call_nonkeyword function_call_generic function_call_conflict
%type <str> is_suffix
%type <colTuple> col_tuple
%type <exprs> expression_list
%type <values> tuple_list
%type <valTuple> row_tuple tuple_or_empty
%type <expr> tuple_expression
%type <subquery> subquery
%type <colName> column_name
%type <whens> when_expression_list
%type <when> when_expression
%type <expr> expression_opt else_expression_opt
%type <exprs> group_by_opt
%type <expr> 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> ins_column_list column_list
%type <columns> include_columns_opt
%type <partitions> opt_partition_clause partition_list
%type <updateExprs> on_dup_opt
%type <updateExprs> update_list
%type <setExprs> set_list transaction_chars
%type <bytes> charset_or_character_set
%type <updateExpr> update_expression
%type <setExpr> set_expression transaction_char isolation_level
%type <str> ignore_opt default_opt
%type <str> extended_opt full_opt from_database_opt tables_or_processlist
%type <showFilter> like_or_where_opt
%type <byt> exists_opt
%type <empty> not_exists_opt non_add_drop_or_rename_operation to_opt index_opt when_expression_opt for_each_row_opt
%type <bytes> reserved_keyword non_reserved_keyword
%type <colIdent> sql_id reserved_sql_id col_alias as_ci_opt
%type <boolVal> unique_opt
%type <expr> charset_value
%type <tableIdent> table_id reserved_table_id table_alias as_opt_id
%type <empty> as_opt
%type <empty> force_eof ddl_force_eof
%type <str> charset
%type <str> set_session_or_global show_session_or_global
%type <convertType> convert_type simple_convert_type
%type <columnType> column_type
%type <columnType> bool_type int_type decimal_type numeric_type time_type char_type spatial_type
%type <optVal> length_opt max_length_opt current_timestamp
%type <str> charset_opt collate_opt
%type <boolVal> unsigned_opt zero_fill_opt array_opt time_zone_opt
%type <LengthScaleOption> float_length_opt decimal_length_opt
%type <strs> enum_values
%type <columnDefinition> column_definition
%type <columnType> column_definition_type
%type <indexDefinition> index_definition primary_key_definition
%type <checkDefinition> check_definition
%type <foreignKeyDefinition> foreign_key_definition foreign_key_without_options
%type <colIdent> reference_option
%type <colIdent> sql_id_opt
%type <colIdents> sql_id_list
%type <str> index_or_key
%type <str> equal_opt
%type <TableSpec> table_spec table_column_list
%type <str> table_opt_name table_opt_value
%type <tableOptions> table_option_list
%type <indexInfo> index_info
%type <indexColumn> index_column
%type <bytes> operator_class
%type <indexColumnsOrExpression> index_column_list_or_expression
%type <indexColumns> index_column_list
%type <indexPartition> index_partition_opt
%type <indexOptions> index_option_opt
%type <indexOption> index_option
%type <indexOptions> index_option_list mssql_index_option_list
%type <partDefs> partition_definitions
%type <partDef> partition_definition
%type <partSpec> partition_operation
%type <vindexParam> vindex_param
%type <vindexParams> vindex_param_list vindex_params_opt
%type <colIdent> vindex_type vindex_type_opt
%type <bytes> alter_object_type
%type <bytes> policy_as_opt policy_for_opt character_cast_opt
%type <expr> using_opt with_check_opt
%left <bytes> TYPECAST CHECK
%type <bytes> or_replace_opt
%type <boolVal> no_inherit_opt
%type <str> identity_behavior
%type <sequence> sequence_opt
%type <boolVal> clustered_opt not_for_replication_opt
%type <defaultValueOrExpression> default_definition
%type <optVal> default_val
%type <expr> default_expression
%type <optVal> srid_definition srid_val
%type <optVal> on_off
%type <str> trigger_time trigger_event fetch_opt
%type <strs> trigger_event_list
%type <blockStatement> trigger_statements statement_block
%type <statement> trigger_statement trigger_statement_start
%type <localVariable> local_variable
%type <localVariables> declare_variable_list
%type <boolVal> scroll_opt
%type <strs> table_hint_list table_hint_opt
%type <str> table_hint
%type <newQualifierColName> new_qualifier_column_name
%type <boolVal> deferrable_opt initially_deferred_opt
%type <boolVal> variadic_opt
%type <arrayConstructor> array_constructor
%type <arrayElements> array_element_list
%type <arrayElement> array_element
%type <str> sql_security sql_security_opt
%type <overExpr> over_expression
%token <bytes> OVER
%type <partitionBy> partition_by_opt partition_by_list
%type <partition> partition
%type <boolVals> unique_clustered_opt
%type <empty> nonclustered_columnstore
%type <bytes> bool_option_name
%type <strs> bool_option_name_list
%start any_command
%%
any_command:
command semicolon_opt
{
setParseTree(yylex, $1)
}
semicolon_opt:
/*empty*/ {}
| ';' {}
command:
select_statement
{
$$ = $1
}
| stream_statement
| insert_statement
| update_statement
| delete_statement
| set_statement
| create_statement
| alter_statement
| rename_statement
| drop_statement
| truncate_statement
| analyze_statement
| show_statement
| use_statement
| begin_statement
| commit_statement
| rollback_statement
| other_statement
select_statement:
base_select order_by_opt limit_opt lock_opt
{
sel := $1.(*Select)
sel.OrderBy = $2
sel.Limit = $3
sel.Lock = $4
$$ = sel
}
| union_lhs union_op union_rhs order_by_opt limit_opt lock_opt
{
$$ = &Union{Type: $2, Left: $1, Right: $3, OrderBy: $4, Limit: $5, Lock: $6}
}
stream_statement:
STREAM comment_opt select_expression FROM table_name
{
$$ = &Stream{Comments: Comments($2), SelectExpr: $3, Table: $5}
}
// base_select is an unparenthesized SELECT with no order by clause or beyond.
base_select:
SELECT comment_opt cache_opt distinct_opt straight_join_opt select_expression_list from_opt where_expression_opt group_by_opt having_opt
{
$$ = &Select{Comments: Comments($2), Cache: $3, Distinct: $4, Hints: $5, SelectExprs: $6, From: $7, Where: NewWhere(WhereStr, $8), GroupBy: GroupBy($9), Having: NewWhere(HavingStr, $10)}
}
union_lhs:
select_statement
{
$$ = $1
}
| openb select_statement closeb
{
$$ = &ParenSelect{Select: $2}
}
union_rhs:
base_select
{
$$ = $1
}
| openb select_statement closeb
{
$$ = &ParenSelect{Select: $2}
}
insert_statement:
insert_or_replace comment_opt ignore_opt into_table_name opt_partition_clause insert_data on_dup_opt
{
// insert_data returns a *Insert pre-filled with Columns & Values
ins := $6
ins.Action = $1
ins.Comments = $2
ins.Ignore = $3
ins.Table = $4
ins.Partitions = $5
ins.OnDup = OnDup($7)
$$ = ins
}
| insert_or_replace comment_opt ignore_opt into_table_name opt_partition_clause SET update_list on_dup_opt
{
cols := make(Columns, 0, len($7))
vals := make(ValTuple, 0, len($8))
for _, updateList := range $7 {
cols = append(cols, updateList.Name.Name)
vals = append(vals, updateList.Expr)
}
$$ = &Insert{Action: $1, Comments: Comments($2), Ignore: $3, Table: $4, Partitions: $5, Columns: cols, Rows: Values{vals}, OnDup: OnDup($8)}
}
insert_or_replace:
INSERT
{
$$ = InsertStr
}
| REPLACE
{
$$ = ReplaceStr
}
update_statement:
UPDATE comment_opt table_references SET update_list where_expression_opt order_by_opt limit_opt
{
$$ = &Update{Comments: Comments($2), TableExprs: $3, Exprs: $5, Where: NewWhere(WhereStr, $6), OrderBy: $7, Limit: $8}
}
delete_statement:
DELETE comment_opt FROM table_name opt_partition_clause where_expression_opt order_by_opt limit_opt
{
$$ = &Delete{Comments: Comments($2), TableExprs: TableExprs{&AliasedTableExpr{Expr:$4}}, Partitions: $5, Where: NewWhere(WhereStr, $6), OrderBy: $7, Limit: $8}
}
| DELETE comment_opt FROM table_name_list USING table_references where_expression_opt
{
$$ = &Delete{Comments: Comments($2), Targets: $4, TableExprs: $6, Where: NewWhere(WhereStr, $7)}
}
| DELETE comment_opt table_name_list from_or_using table_references where_expression_opt
{
$$ = &Delete{Comments: Comments($2), Targets: $3, TableExprs: $5, Where: NewWhere(WhereStr, $6)}
}
from_or_using:
FROM {}
| USING {}
table_name_list:
table_name
{
$$ = TableNames{$1}
}
| table_name_list ',' table_name
{
$$ = append($$, $3)
}
opt_partition_clause:
{
$$ = nil
}
| PARTITION openb partition_list closeb
{
$$ = $3
}
set_statement:
SET comment_opt set_list
{
$$ = &Set{Comments: Comments($2), Exprs: $3}
}
| SET comment_opt set_session_or_global set_list
{
$$ = &Set{Comments: Comments($2), Scope: $3, Exprs: $4}
}
| SET comment_opt set_session_or_global TRANSACTION transaction_chars
{
$$ = &Set{Comments: Comments($2), Scope: $3, Exprs: $5}
}
| SET comment_opt TRANSACTION transaction_chars
{
$$ = &Set{Comments: Comments($2), Exprs: $4}
}
declare_statement:
DECLARE declare_variable_list
{
$$ = &Declare{Type: declareVariable, Variables: $2}
}
| DECLARE sql_id scroll_opt CURSOR FOR select_statement
{
$$ = &Declare{
Type: declareCursor,
Cursor: &CursorDefinition{
Name: $2,
Scroll: bool($3),
Select: $6,
},
}
}
declare_variable_list:
local_variable
{
$$ = []*LocalVariable{$1}
}
| declare_variable_list ',' local_variable
{
$$ = append($$, $3)
}
local_variable:
sql_id column_type
{
$$ = &LocalVariable{Name: $1, DataType: $2}
}
scroll_opt:
{
$$ = BoolVal(false)
}
| SCROLL
{
$$ = BoolVal(true)
}
cursor_statement:
OPEN sql_id
{
$$ = &Cursor{
Action: OpenStr,
CursorName: $2,
}
}
| CLOSE sql_id
{
$$ = &Cursor{
Action: CloseStr,
CursorName: $2,
}
}
| DEALLOCATE sql_id
{
$$ = &Cursor{
Action: DeallocateStr,
CursorName: $2,
}
}
| FETCH fetch_opt sql_id
{
$$ = &Cursor{
Action: FetchStr,
Fetch: $2,
CursorName: $3,
}
}
| FETCH fetch_opt sql_id INTO sql_id
{
$$ = &Cursor{
Action: FetchStr,
Fetch: $2,
CursorName: $3,
Into: $5,
}
}
fetch_opt:
{
$$ = ""
}
| NEXT FROM
{
$$ = string($1)
}
| PRIOR FROM
{
$$ = string($1)
}
| FIRST FROM
{
$$ = string($1)
}
| LAST FROM
{
$$ = string($1)
}
while_statement:
WHILE condition trigger_statement
{
$$ = &While{
Condition: $2,
Statements: []Statement{$3},
}
}
| WHILE condition BEGIN statement_block END
{
$$ = &While{
Condition: $2,
Statements: $4,
Keyword: string($3),
}
}
statement_block:
trigger_statement
{
$$ = []Statement{$1}
}
| statement_block trigger_statement
{
$$ = append($$, $2)
}
| statement_block ';' trigger_statement
{
$$ = append($$, $3)
}
if_statement:
// For MySQL
IF expression THEN trigger_statements ';' END IF
{
$$ = &If{
Condition: $2,
IfStatements: $4,
Keyword: string($3),
}
}
// For MSSQL?
| IF condition BEGIN statement_block END
{
$$ = &If{
Condition: $2,
IfStatements: $4,
Keyword: string($3),
}
}
| IF condition BEGIN statement_block END ELSE BEGIN statement_block END
{
$$ = &If{
Condition: $2,
IfStatements: $4,
ElseStatements: $8,
Keyword: string($3),
}
}
transaction_chars:
transaction_char
{
$$ = SetExprs{$1}
}
| transaction_chars ',' transaction_char
{
$$ = append($$, $3)
}
transaction_char:
ISOLATION LEVEL isolation_level
{
$$ = $3
}
| READ WRITE
{
$$ = &SetExpr{Name: NewColIdent("tx_read_only"), Expr: NewIntVal([]byte("0"))}
}
| READ ONLY
{
$$ = &SetExpr{Name: NewColIdent("tx_read_only"), Expr: NewIntVal([]byte("1"))}
}
isolation_level:
REPEATABLE READ
{
$$ = &SetExpr{Name: NewColIdent("tx_isolation"), Expr: NewStrVal([]byte("repeatable read"))}
}
| READ COMMITTED
{
$$ = &SetExpr{Name: NewColIdent("tx_isolation"), Expr: NewStrVal([]byte("read committed"))}
}
| READ UNCOMMITTED
{
$$ = &SetExpr{Name: NewColIdent("tx_isolation"), Expr: NewStrVal([]byte("read uncommitted"))}
}
| SERIALIZABLE
{
$$ = &SetExpr{Name: NewColIdent("tx_isolation"), Expr: NewStrVal([]byte("serializable"))}
}
sql_security_opt:
{
$$ = ""
}
| SQL SECURITY sql_security
{
$$ = $3
}
sql_security:
DEFINER
{
$$ = string($1)
}
| INVOKER
{
$$ = string($1)
}
set_session_or_global:
SESSION
{
$$ = SessionStr
}
| GLOBAL
{
$$ = GlobalStr
}
create_statement:
create_table_prefix table_spec
{
$1.TableSpec = $2
$$ = $1
}
| CREATE unique_clustered_opt INDEX sql_id ON table_name '(' index_column_list_or_expression ')' include_columns_opt where_expression_opt index_option_opt index_partition_opt
{
$$ = &DDL{
Action: CreateIndexStr,
Table: $6,
NewName: $6,
IndexSpec: &IndexSpec{
Name: $4,
Type: NewColIdent(""),
Unique: bool($2[0]),
Clustered: bool($2[0]),
Included: $10,
Where: NewWhere(WhereStr, $11),
Options: $12,
Partition: $13,
},
IndexCols: $8.IndexCols,
IndexExpr: $8.IndexExpr,
}
}
| CREATE unique_clustered_opt INDEX ON table_name '(' index_column_list_or_expression ')' include_columns_opt where_expression_opt index_option_opt index_partition_opt
{
$$ = &DDL{
Action: CreateIndexStr,
Table: $5,
NewName: $5,
IndexSpec: &IndexSpec{
Name: NewColIdent(""),
Type: NewColIdent(""),
Unique: bool($2[0]),
Clustered: bool($2[1]),
Included: $9,
Where: NewWhere(WhereStr, $10),
Options: $11,
Partition: $12,
},
IndexCols: $7.IndexCols,
IndexExpr: $7.IndexExpr,
}
}
| CREATE unique_clustered_opt INDEX CONCURRENTLY sql_id ON table_name '(' index_column_list_or_expression ')' include_columns_opt where_expression_opt index_option_opt index_partition_opt
{
$$ = &DDL{
Action: CreateIndexStr,
Table: $7,
NewName: $7,
IndexSpec: &IndexSpec{
Name: $5,
Type: NewColIdent(""),
Unique: bool($2[0]),
Clustered: bool($2[1]),
Included: $11,
Where: NewWhere(WhereStr, $12),
Options: $13,
Partition: $14,
},
IndexCols: $9.IndexCols,
IndexExpr: $9.IndexExpr,
}
}
/* For MySQL */
| CREATE unique_clustered_opt INDEX sql_id USING sql_id ON table_name '(' index_column_list ')' index_option_opt
{
$$ = &DDL{
Action: CreateIndexStr,
Table: $8,
NewName: $8,
IndexSpec: &IndexSpec{
Name: $4,
Type: $6,
Unique: bool($2[0]),
Options: $12,
},
IndexCols: $10,
}
}
/* For PostgreSQL */
| CREATE unique_clustered_opt INDEX sql_id ON table_name USING sql_id '(' index_column_list_or_expression ')' where_expression_opt index_option_opt
{
$$ = &DDL{
Action: CreateIndexStr,
Table: $6,
NewName: $6,
IndexSpec: &IndexSpec{
Name: $4,
Type: $8,
Unique: bool($2[0]),
Where: NewWhere(WhereStr, $12),
},
IndexCols: $10.IndexCols,
IndexExpr: $10.IndexExpr,
}
}
/* For SQL Server */
| CREATE nonclustered_columnstore INDEX sql_id ON table_name '(' column_list ')' where_expression_opt index_option_opt index_partition_opt
{
$$ = &DDL{
Action: CreateIndexStr,
Table: $6,
NewName: $6,
IndexSpec: &IndexSpec{
Name: $4,
Type: NewColIdent(""),
Unique: false,
Clustered: false,
ColumnStore: true,
Included: $8,
Where: NewWhere(WhereStr, $10),
Options: $11,
Partition: $12,
},
}
}
| CREATE or_replace_opt VIEW not_exists_opt table_name AS select_statement
{
$$ = &DDL{Action: CreateViewStr, View: &View{
Action: CreateViewStr,
Name: $5.ToViewName(),
Definition: $7,
}}
}
| CREATE or_replace_opt sql_security_opt VIEW not_exists_opt table_name AS select_statement
{
$$ = &DDL{Action: CreateViewStr, View: &View{
Action: CreateSqlSecurityStr,
SecurityType: $3,
Name: $6.ToViewName(),
Definition: $8,
}}
}
| CREATE MATERIALIZED VIEW not_exists_opt table_name AS select_statement
{
$$ = &DDL{Action: CreateViewStr, View: &View{
Action: CreateMatViewStr,
Name: $5.ToViewName(),
Definition: $7,
}}
}
| CREATE VINDEX sql_id vindex_type_opt vindex_params_opt
{
$$ = &DDL{Action: CreateVindexStr, VindexSpec: &VindexSpec{
Name: $3,
Type: $4,
Params: $5,
}}
}
| CREATE DATABASE not_exists_opt ID ddl_force_eof
{
$$ = &DBDDL{Action: CreateStr, DBName: string($4)}
}
| CREATE SCHEMA not_exists_opt ID ddl_force_eof
{
$$ = &DBDDL{Action: CreateStr, DBName: string($4)}
}
| CREATE POLICY sql_id ON table_name policy_as_opt policy_for_opt TO sql_id_list using_opt with_check_opt
{
$$ = &DDL{Action: CreatePolicyStr, Table: $5, Policy: &Policy{
Name: $3,
Permissive: Permissive($6),
Scope: $7,
To: $9,
Using: NewWhere(WhereStr, $10),
WithCheck: NewWhere(WhereStr, $11),
}}
}
/* For MySQL */