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sql: add ON UPDATE syntax
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Previously, we did not have parsing implemented for ON UPDATE
expressions on columns. This PR adds parsing for ON UPDATE expressions.

Release note: None
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@pawalt
pawalt committed Aug 12, 2021
1 parent 65abfcc commit 572ad64
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Showing 13 changed files with 182 additions and 8 deletions.
4 changes: 4 additions & 0 deletions docs/generated/sql/bnf/alter_column.bnf
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@ alter_onetable_stmt ::=
| 'ALTER' 'TABLE' table_name 'ALTER' 'COLUMN' column_name 'DROP' 'DEFAULT'
| 'ALTER' 'TABLE' table_name 'ALTER' column_name 'SET' 'DEFAULT' a_expr
| 'ALTER' 'TABLE' table_name 'ALTER' column_name 'DROP' 'DEFAULT'
| 'ALTER' 'TABLE' table_name 'ALTER' 'COLUMN' column_name alter_column_on_update
| 'ALTER' 'TABLE' table_name 'ALTER' column_name alter_column_on_update
| 'ALTER' 'TABLE' table_name 'ALTER' 'COLUMN' column_name alter_column_visible
| 'ALTER' 'TABLE' table_name 'ALTER' column_name alter_column_visible
| 'ALTER' 'TABLE' table_name 'ALTER' 'COLUMN' column_name 'DROP' 'NOT' 'NULL'
Expand Down Expand Up @@ -31,6 +33,8 @@ alter_onetable_stmt ::=
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' 'COLUMN' column_name 'DROP' 'DEFAULT'
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' column_name 'SET' 'DEFAULT' a_expr
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' column_name 'DROP' 'DEFAULT'
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' 'COLUMN' column_name alter_column_on_update
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' column_name alter_column_on_update
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' 'COLUMN' column_name alter_column_visible
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' column_name alter_column_visible
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name 'ALTER' 'COLUMN' column_name 'DROP' 'NOT' 'NULL'
Expand Down
4 changes: 2 additions & 2 deletions docs/generated/sql/bnf/alter_table.bnf
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
alter_onetable_stmt ::=
'ALTER' 'TABLE' table_name ( ( ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) ( ( ',' ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) )* )
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name ( ( ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) ( ( ',' ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) )* )
'ALTER' 'TABLE' table_name ( ( ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_on_update | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) ( ( ',' ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_on_update | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) )* )
| 'ALTER' 'TABLE' 'IF' 'EXISTS' table_name ( ( ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_on_update | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) ( ( ',' ( 'RENAME' ( 'COLUMN' | ) column_name 'TO' column_name | 'RENAME' 'CONSTRAINT' column_name 'TO' column_name | 'ADD' ( column_name typename col_qual_list ) | 'ADD' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' ( column_name typename col_qual_list ) | 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' ( column_name typename col_qual_list ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DEFAULT' a_expr | 'DROP' 'DEFAULT' ) | 'ALTER' ( 'COLUMN' | ) column_name alter_column_on_update | 'ALTER' ( 'COLUMN' | ) column_name alter_column_visible | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'NOT' 'NULL' | 'ALTER' ( 'COLUMN' | ) column_name 'DROP' 'STORED' | 'ALTER' ( 'COLUMN' | ) column_name 'SET' 'NOT' 'NULL' | 'DROP' ( 'COLUMN' | ) 'IF' 'EXISTS' column_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' ( 'COLUMN' | ) column_name ( 'CASCADE' | 'RESTRICT' | ) | 'ALTER' ( 'COLUMN' | ) column_name ( 'SET' 'DATA' | ) 'TYPE' typename ( 'COLLATE' collation_name | ) ( 'USING' a_expr | ) | 'ADD' ( 'CONSTRAINT' constraint_name constraint_elem | constraint_elem ) | 'ALTER' 'PRIMARY' 'KEY' 'USING' 'COLUMNS' '(' index_params ')' opt_hash_sharded opt_interleave | 'VALIDATE' 'CONSTRAINT' constraint_name | 'DROP' 'CONSTRAINT' 'IF' 'EXISTS' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'DROP' 'CONSTRAINT' constraint_name ( 'CASCADE' | 'RESTRICT' | ) | 'EXPERIMENTAL_AUDIT' 'SET' audit_mode | partition_by_table ) ) )* )
2 changes: 2 additions & 0 deletions docs/generated/sql/bnf/col_qualification.bnf
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ col_qualification ::=
| 'CONSTRAINT' constraint_name 'PRIMARY' 'KEY' 'USING' 'HASH' 'WITH' 'BUCKET_COUNT' '=' n_buckets
| 'CONSTRAINT' constraint_name 'CHECK' '(' a_expr ')'
| 'CONSTRAINT' constraint_name 'DEFAULT' b_expr
| 'CONSTRAINT' constraint_name 'ON' 'UPDATE' b_expr
| 'CONSTRAINT' constraint_name 'REFERENCES' table_name opt_name_parens key_match reference_actions
| 'CONSTRAINT' constraint_name generated_as '(' a_expr ')' 'STORED'
| 'CONSTRAINT' constraint_name generated_as '(' a_expr ')' 'VIRTUAL'
Expand All @@ -20,6 +21,7 @@ col_qualification ::=
| 'PRIMARY' 'KEY' 'USING' 'HASH' 'WITH' 'BUCKET_COUNT' '=' n_buckets
| 'CHECK' '(' a_expr ')'
| 'DEFAULT' b_expr
| 'ON' 'UPDATE' b_expr
| 'REFERENCES' table_name opt_name_parens key_match reference_actions
| generated_as '(' a_expr ')' 'STORED'
| generated_as '(' a_expr ')' 'VIRTUAL'
Expand Down
10 changes: 8 additions & 2 deletions docs/generated/sql/bnf/stmt_block.bnf
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Original file line number Diff line number Diff line change
Expand Up @@ -2634,6 +2634,7 @@ alter_table_cmd ::=
| 'ADD' 'COLUMN' column_def
| 'ADD' 'COLUMN' 'IF' 'NOT' 'EXISTS' column_def
| 'ALTER' opt_column column_name alter_column_default
| 'ALTER' opt_column column_name alter_column_on_update
| 'ALTER' opt_column column_name alter_column_visible
| 'ALTER' opt_column column_name 'DROP' 'NOT' 'NULL'
| 'ALTER' opt_column column_name 'DROP' 'STORED'
Expand Down Expand Up @@ -2911,6 +2912,10 @@ alter_column_default ::=
'SET' 'DEFAULT' a_expr
| 'DROP' 'DEFAULT'

alter_column_on_update ::=
'SET' 'ON' 'UPDATE' b_expr
| 'DROP' 'ON' 'UPDATE'

alter_column_visible ::=
'SET' 'VISIBLE'
| 'SET' 'NOT' 'VISIBLE'
Expand Down Expand Up @@ -3034,6 +3039,7 @@ col_qualification_elem ::=
| 'PRIMARY' 'KEY' 'USING' 'HASH' 'WITH' 'BUCKET_COUNT' '=' a_expr
| 'CHECK' '(' a_expr ')'
| 'DEFAULT' b_expr
| 'ON' 'UPDATE' b_expr
| 'REFERENCES' table_name opt_name_parens key_match reference_actions
| generated_as '(' a_expr ')' 'STORED'
| generated_as '(' a_expr ')' 'VIRTUAL'
Expand All @@ -3044,10 +3050,10 @@ family_name ::=
name

reference_on_update ::=
'ON' 'UPDATE' reference_action
'ON_UPDATE' 'UPDATE' reference_action

reference_on_delete ::=
'ON' 'DELETE' reference_action
'ON_DELETE' 'DELETE' reference_action

group_by_item ::=
a_expr
Expand Down
3 changes: 3 additions & 0 deletions pkg/sql/alter_table.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1160,6 +1160,9 @@ func applyColumnMutation(
}
}

case *tree.AlterTableSetOnUpdate:
return errors.Newf("unimplemented")

case *tree.AlterTableSetVisible:
column, err := tableDesc.FindActiveOrNewColumnByName(col.ColName())
if err != nil {
Expand Down
1 change: 1 addition & 0 deletions pkg/sql/lexbase/predicates.go
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,7 @@ func init() {
"reset",
"role",
"user",
"on",
} {
reservedOrLookaheadKeywords[s] = struct{}{}
}
Expand Down
16 changes: 15 additions & 1 deletion pkg/sql/parser/lexer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -80,11 +80,15 @@ func (l *lexer) Lex(lval *sqlSymType) int {
*lval = l.tokens[l.lastPos]

switch lval.id {
case NOT, WITH, AS, GENERATED, NULLS, RESET, ROLE, USER:
case NOT, WITH, AS, GENERATED, NULLS, RESET, ROLE, USER, ON:
nextID := int32(0)
if l.lastPos+1 < len(l.tokens) {
nextID = l.tokens[l.lastPos+1].id
}
secondID := int32(0)
if l.lastPos+2 < len(l.tokens) {
secondID = l.tokens[l.lastPos+2].id
}

// If you update these cases, update lex.lookaheadKeywords.
switch lval.id {
Expand Down Expand Up @@ -131,6 +135,16 @@ func (l *lexer) Lex(lval *sqlSymType) int {
case ALL:
lval.id = USER_ALL
}
case ON:
switch nextID {
case DELETE:
lval.id = ON_DELETE
case UPDATE:
switch secondID {
case NO, RESTRICT, CASCADE, SET:
lval.id = ON_UPDATE_LA
}
}
}
}

Expand Down
27 changes: 24 additions & 3 deletions pkg/sql/parser/sql.y
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Original file line number Diff line number Diff line change
Expand Up @@ -862,7 +862,8 @@ func (u *sqlSymUnion) setVar() *tree.SetVar {
// extensions (CREATE FAMILY/CREATE FAMILY family_name). RESET_ALL is used
// to differentiate `RESET var` from `RESET ALL`. ROLE_ALL and USER_ALL are
// used in ALTER ROLE statements that affect all roles.
%token NOT_LA NULLS_LA WITH_LA AS_LA GENERATED_ALWAYS GENERATED_BY_DEFAULT RESET_ALL ROLE_ALL USER_ALL
%token NOT_LA NULLS_LA WITH_LA AS_LA GENERATED_ALWAYS GENERATED_BY_DEFAULT RESET_ALL ROLE_ALL
%token USER_ALL ON_UPDATE_LA ON_DELETE

%union {
id int32
Expand Down Expand Up @@ -1113,6 +1114,7 @@ func (u *sqlSymUnion) setVar() *tree.SetVar {
%type <tree.SelectStatement> set_operation

%type <tree.Expr> alter_column_default
%type <tree.Expr> alter_column_on_update
%type <tree.Expr> alter_column_visible
%type <tree.Direction> opt_asc_desc
%type <tree.NullsOrder> opt_nulls_order
Expand Down Expand Up @@ -2122,6 +2124,11 @@ alter_table_cmd:
{
$$.val = &tree.AlterTableSetDefault{Column: tree.Name($3), Default: $4.expr()}
}
// ALTER TABLE <name> ALTER [COLUMN] <colname> {ON UPDATE <expr>|DROP ON UPDATE}
| ALTER opt_column column_name alter_column_on_update
{
$$.val = &tree.AlterTableSetOnUpdate{Column: tree.Name($3), Expr: $4.expr()}
}
// ALTER TABLE <name> ALTER [COLUMN] <colname> SET {VISIBLE|NOT VISIBLE}
| ALTER opt_column column_name alter_column_visible
{
Expand Down Expand Up @@ -2286,6 +2293,16 @@ alter_column_default:
$$.val = nil
}

alter_column_on_update:
SET ON UPDATE b_expr
{
$$.val = $4.expr()
}
| DROP ON UPDATE
{
$$.val = nil
}

alter_column_visible:
SET VISIBLE
{
Expand Down Expand Up @@ -6708,6 +6725,10 @@ col_qualification_elem:
{
$$.val = &tree.ColumnDefault{Expr: $2.expr()}
}
| ON UPDATE b_expr
{
$$.val = &tree.ColumnOnUpdate{Expr: $3.expr()}
}
| REFERENCES table_name opt_name_parens key_match reference_actions
{
name := $2.unresolvedObjectName().ToTableName()
Expand Down Expand Up @@ -7088,13 +7109,13 @@ reference_actions:
}

reference_on_update:
ON UPDATE reference_action
ON_UPDATE_LA UPDATE reference_action
{
$$.val = $3.referenceAction()
}

reference_on_delete:
ON DELETE reference_action
ON_DELETE DELETE reference_action
{
$$.val = $3.referenceAction()
}
Expand Down
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