15 let params_of select = List.map (fun x -> `Param x) (snd select)
17 let select_value select =
19 if (List.length s <> 1) then
20 raise (RA.Schema.Error (s,"only one column allowed for SELECT operator in this expression"));
23 let values_or_all table names =
24 let schema = Tables.get_schema table in
26 | Some names -> RA.Schema.project names schema
29 let update_tables tables ss w =
30 let (tables,params) = List.split tables in
31 let p1 = Syntax.params_of_assigns tables ss in
32 let p2 = get_params_opt tables (Syntax.all_tbl_columns tables) w in
33 (List.flatten params) @ p1 @ p2
39 | x, `Param (None,pos) -> Some ((Some (match x with `Limit -> "limit" | `Offset -> "offset"),pos),Int)
40 | _, `Param p -> Some (p,Int)
42 List.filter_map param l, List.mem (`Limit,`Const 1) l
47 %token <string> IDENT TEXT BLOB
49 %token <Stmt.param_id> PARAM
50 %token <Sql.Type.t * bool> FUNCTION /* return type * is grouping function? */
51 %token LPAREN RPAREN COMMA EOF DOT NULL
53 %token SELECT INSERT OR INTO CREATE UPDATE VIEW TABLE VALUES WHERE ASTERISK DISTINCT ALL ANY SOME
54 LIMIT ORDER BY DESC ASC EQUAL DELETE FROM DEFAULT OFFSET SET JOIN LIKE_OP LIKE
55 EXCL TILDE NOT TEST_NULL BETWEEN AND ESCAPE USING UNION EXCEPT INTERSECT AS
56 CONCAT_OP JOIN_TYPE1 JOIN_TYPE2 NATURAL CROSS REPLACE IN GROUP HAVING
57 UNIQUE PRIMARY KEY FOREIGN AUTOINCREMENT ON CONFLICT TEMPORARY IF EXISTS
58 PRECISION UNSIGNED ZEROFILL VARYING CHARSET NATIONAL ASCII UNICODE COLLATE BINARY CHARACTER
59 DATETIME_FUNC DATE TIME TIMESTAMP ALTER ADD COLUMN CASCADE RESTRICT DROP
60 GLOBAL LOCAL VALUE REFERENCES CHECK CONSTRAINT IGNORED AFTER INDEX FULLTEXT FIRST
61 CASE WHEN THEN ELSE END CHANGE
62 %token NUM_DIV_OP NUM_BIT_OP NUM_EQ_OP NUM_CMP_OP PLUS MINUS
63 %token T_INTEGER T_BLOB T_TEXT T_FLOAT T_BOOLEAN T_DATETIME
69 (* FIXME precedence of COMMA and JOIN *)
74 %nonassoc EQUAL NUM_EQ_OP
78 %left ASTERISK NUM_DIV_OP
81 %type <Syntax.expr> expr
83 %start <RA.Schema.t * Stmt.params * Stmt.kind> input
87 input: statement EOF { $1 }
89 if_not_exists: IF NOT EXISTS { }
90 if_exists: IF EXISTS {}
91 temporary: either(GLOBAL,LOCAL)? TEMPORARY { }
93 statement: CREATE ioption(temporary) TABLE ioption(if_not_exists) name=IDENT schema=table_definition
95 Tables.add (name,schema);
98 | ALTER TABLE name=table_name actions=commas(alter_action)
101 | `Add (col,pos) -> Tables.alter_add name col pos
102 | `Drop col -> Tables.alter_drop name col
103 | `Change (oldcol,col,pos) -> Tables.alter_change name oldcol col pos
104 | `None -> ()) actions;
107 | DROP TABLE if_exists? name=IDENT
112 | CREATE either(TABLE,VIEW) name=IDENT AS select=select_stmt
114 let (s,p) = select in
118 | CREATE UNIQUE? INDEX if_not_exists? name=table_name
119 ON table=table_name cols=sequence(index_column)
121 RA.Schema.project cols (Tables.get_schema table) >> ignore; (* just check *)
122 [],[],CreateIndex name
124 | select_stmt_t { $1 }
125 | insert_cmd table=IDENT names=sequence(IDENT)? VALUES values=sequence(expr)?
127 let expect = values_or_all table names in
128 let params, values = match values with
129 | None -> [], Some expect
131 let vl = List.length values in
132 let cl = List.length expect in
134 failwith (sprintf "Expected %u expressions in VALUES list, %u provided" cl vl);
135 Syntax.params_of_assigns [Tables.get table] (List.combine (List.map (fun a -> a.RA.name, None) expect) values), None
137 [], params, Insert (values,table)
139 | insert_cmd table=IDENT names=sequence(IDENT)? select=maybe_parenth(select_stmt)
141 let (schema,params) = select in
142 let expect = values_or_all table names in
143 ignore (RA.Schema.compound expect schema); (* test equal types *)
144 [], params, Insert(None,table)
146 | insert_cmd table=IDENT SET ss=commas(set_column)
148 let p1 = Syntax.params_of_assigns [Tables.get table] ss in
149 [], p1, Insert (None,table)
151 | update_cmd table=IDENT SET ss=commas(set_column) w=where? o=loption(order) lim=loption(limit)
153 let params = update_tables [Tables.get table,[]] ss w in
154 let p3 = Syntax.params_of_order o [] [Tables.get table] in
155 [], params @ p3 @ lim, Update (Some table)
157 /* http://dev.mysql.com/doc/refman/5.1/en/update.html multi-table syntax */
158 | update_cmd tables=commas(source) SET ss=commas(set_column) w=where?
160 let params = update_tables tables ss w in
161 [], params, Update None
163 | DELETE FROM table=IDENT w=where?
165 let t = Tables.get table in
166 let p = get_params_opt [t] (snd t) w in
169 | SET IDENT EQUAL either(literal_value,IDENT) { [], [], Other }
171 table_name: name=IDENT | IDENT DOT name=IDENT { name } (* FIXME db name *)
172 index_column: name=IDENT collate? order_type? { name }
174 table_definition: t=sequence_(column_def1) table_def_done { List.filter_map (function `Attr a -> Some a | `Constraint _ -> None) t }
175 | LIKE name=maybe_parenth(IDENT) { Tables.get name >> snd } (* mysql *)
177 (* ugly, can you fixme? *)
178 (* ignoring everything after RPAREN (NB one look-ahead token) *)
179 table_def_done: table_def_done1 RPAREN IGNORED* { Parser_state.mode_normal () }
180 table_def_done1: { Parser_state.mode_ignore () }
182 select_stmt_t: select_core other=list(preceded(compound_op,select_core))
183 o=loption(order) lim=limit_t?
185 let (s1,p1,tbls,singlerow1) = $1 in
186 let (s2l,p2l) = List.split (List.map (fun (s,p,_,_) -> s,p) other) in
187 if Config.debug1 () then eprintf "singlerow=%b other=%u\n%!" singlerow1 (List.length other);
188 let singlerow1 = singlerow1 && other = [] in
189 (* ignoring tables in compound statements - they cannot be used in ORDER BY *)
190 let final_schema = List.fold_left RA.Schema.compound s1 s2l in
191 let p3 = Syntax.params_of_order o final_schema tbls in
192 let (p4,singlerow) = match lim with | Some x -> x | None -> [],false in
193 (* RA.Schema.check_unique schema; *)
194 final_schema,(p1@(List.flatten p2l)@p3@p4), Select (singlerow || singlerow1)
197 select_stmt: select_stmt_t { let (s,p,_) = $1 in s,p }
199 select_core: SELECT select_type? r=commas(column1)
205 let (tbls,p2,joined_schema) = Syntax.join t in
206 let singlerow = g = [] && Syntax.test_all_grouping r in
207 let singlerow2 = w = None && g = [] && Syntax.test_all_const r in
208 let p1 = Syntax.params_of_columns tbls joined_schema r in
209 let p3 = Syntax.get_params_opt tbls joined_schema w in
210 let p4 = Syntax.get_params_l tbls joined_schema g in
211 let p5 = Syntax.get_params_opt tbls joined_schema h in
212 (Syntax.infer_schema r tbls joined_schema, p1 @ p2 @ p3 @ p4 @ p5, tbls, singlerow || singlerow2)
215 table_list: src=source joins=join_source* { (src,joins) }
217 join_source: NATURAL maybe_join_type JOIN src=source { src,`Natural }
218 | CROSS JOIN src=source { src,`Cross }
219 | qualified_join src=source cond=join_cond { src,cond }
221 qualified_join: COMMA | maybe_join_type JOIN { }
223 join_cond: ON e=expr { `Search e }
224 | USING l=sequence(IDENT) { `Using l }
227 source1: IDENT { Tables.get $1,[] }
228 | LPAREN s=select_core RPAREN { let (s,p,_,_) = s in ("",s),p }
230 source: src=source1 alias=maybe_as
233 | Some name -> let ((_,s),p) = src in ((name,s),p)
237 insert_cmd: INSERT OR conflict_algo INTO | INSERT INTO | REPLACE INTO { }
238 update_cmd: UPDATE | UPDATE OR conflict_algo { }
239 conflict_algo: CONFLICT_ALGO | REPLACE { }
241 select_type: DISTINCT | ALL { }
243 int_or_param: i=INTEGER { `Const i }
244 | p=PARAM { `Param p }
246 limit_t: LIMIT lim=int_or_param { limit [`Limit,lim] }
247 | LIMIT ofs=int_or_param COMMA lim=int_or_param { limit [`Offset,ofs; `Limit,lim] }
248 | LIMIT lim=int_or_param OFFSET ofs=int_or_param { limit [`Limit,lim; `Offset,ofs] }
250 limit: limit_t { fst $1 }
252 order: ORDER BY l=commas(terminated(expr,order_type?)) { l }
253 order_type: DESC | ASC { }
255 where: WHERE e=expr { e }
256 group: GROUP BY l=expr_list { l }
257 having: HAVING e=expr { e }
260 | IDENT DOT ASTERISK { Syntax.AllOf $1 }
261 | ASTERISK { Syntax.All }
262 | e=expr m=maybe_as { Syntax.Expr (e,m) }
264 maybe_as: AS? name=IDENT { Some name }
267 maybe_parenth(X): x=X | LPAREN x=X RPAREN { x }
269 alter_action: ADD COLUMN? col=maybe_parenth(column_def) pos=alter_pos { `Add (col,pos) }
270 | ADD index_type IDENT? sequence(IDENT) { `None }
271 | DROP INDEX IDENT { `None }
272 | DROP COLUMN? col=IDENT drop_behavior? { `Drop col } (* FIXME behavior? *)
273 | CHANGE COLUMN? old_name=IDENT column=column_def pos=alter_pos { `Change (old_name,column,pos) }
274 index_type: INDEX | FULLTEXT | PRIMARY KEY { }
275 alter_pos: AFTER col=IDENT { `After col }
278 drop_behavior: CASCADE | RESTRICT { }
280 column_def: name=IDENT t=sql_type? column_def_extra*
281 { RA.attr name (match t with Some x -> x | None -> Int) }
283 column_def1: c=column_def { `Attr c }
284 | pair(CONSTRAINT,IDENT)? c=table_constraint_1 { `Constraint c }
286 on_conflict: ON CONFLICT algo=conflict_algo { algo }
287 column_def_extra: PRIMARY KEY { Some PrimaryKey }
288 | NOT NULL { Some NotNull }
290 | UNIQUE { Some Unique }
291 | AUTOINCREMENT { Some Autoincrement }
292 | on_conflict { None }
293 | CHECK LPAREN expr RPAREN { None }
294 | DEFAULT default_value { None } (* FIXME check type with column *)
295 | COLLATE IDENT { None }
297 default_value: literal_value | datetime_value { }
299 (* FIXME check columns *)
301 | some_key IDENT? key_arg { [] }
302 | FOREIGN KEY IDENT? sequence(IDENT) REFERENCES IDENT sequence(IDENT)? { [] }
303 | CHECK LPAREN expr RPAREN { [] }
305 some_key: UNIQUE KEY? | PRIMARY? KEY | FULLTEXT KEY { }
306 key_arg: LPAREN VALUE RPAREN | sequence(IDENT) { }
308 set_column: name=attr_name EQUAL e=expr { name,e }
310 (* expr: expr1 { $1 >> Syntax.expr_to_string >> prerr_endline; $1 } *)
312 anyall: ANY | ALL | SOME { }
314 mnot(X): NOT x = X | x = X { x }
316 attr_name: name=IDENT { (name,None) }
317 | table=IDENT DOT name=IDENT
318 | IDENT DOT table=IDENT DOT name=IDENT { (name,Some table) } (* FIXME database identifier *)
321 expr numeric_bin_op expr %prec PLUS { `Func ((Int,false),[$1;$3]) }
322 | expr boolean_bin_op expr %prec AND { `Func ((Bool,false),[$1;$3]) }
323 | e1=expr comparison_op anyall? e2=expr %prec EQUAL { `Func ((Bool,false),[e1;e2]) }
324 | expr CONCAT_OP expr { `Func ((Text,false),[$1;$3]) }
325 | e1=expr mnot(like) e2=expr e3=escape?
326 { `Func ((Any,false),(List.filter_valid [Some e1; Some e2; e3])) }
327 | unary_op expr { $2 }
328 | LPAREN expr RPAREN { $2 }
329 | attr_name { `Column $1 }
330 | v=literal_value | v=datetime_value { v }
331 | e1=expr mnot(IN) l=sequence(expr) { `Func ((Any,false),e1::l) }
332 | e1=expr mnot(IN) LPAREN select=select_stmt RPAREN
334 `Func ((Any,false),e1::select_value select)
336 | e1=expr IN table=IDENT { Tables.check(table); e1 }
337 | LPAREN select=select_stmt RPAREN
339 `Func ((Any,false),select_value select)
341 | PARAM { `Param ($1,Any) }
342 | f=FUNCTION LPAREN p=func_params RPAREN { `Func (f,p) }
343 | expr TEST_NULL { $1 }
344 | expr mnot(BETWEEN) expr AND expr { `Func ((Int,false),[$1;$3;$5]) }
345 | mnot(EXISTS) LPAREN select=select_stmt RPAREN { `Func ((Bool,false),params_of select) }
346 | CASE e1=expr? branches=nonempty_list(case_branch) e2=preceded(ELSE,expr)? END
348 let l = function None -> [] | Some x -> [x] in
349 `Func ((Any,false),l e1 @ List.flatten branches @ l e2)
352 case_branch: WHEN e1=expr THEN e2=expr { [e1;e2] }
353 like: LIKE | LIKE_OP { }
355 datetime_value: | DATETIME_FUNC | DATETIME_FUNC LPAREN INTEGER? RPAREN { `Value Datetime }
358 | TEXT { `Value Text }
359 | BLOB { `Value Blob }
360 | INTEGER { `Value Int }
361 | FLOAT { `Value Float }
364 | TIMESTAMP TEXT { `Value Datetime }
366 expr_list: l=commas(expr) { l }
367 func_params: expr_list { $1 }
370 escape: ESCAPE expr { $2 }
371 numeric_bin_op: PLUS | MINUS | ASTERISK | NUM_DIV_OP | NUM_BIT_OP { }
372 comparison_op: EQUAL | NUM_CMP_OP | NUM_EQ_OP { }
373 boolean_bin_op: AND | OR { }
381 sql_type_flavor: T_INTEGER UNSIGNED? ZEROFILL? { Int }
383 | NATIONAL? text VARYING? charset? collate? { Text }
384 | T_FLOAT PRECISION? { Float }
386 | T_DATETIME | DATE | TIME | TIMESTAMP { Datetime }
388 binary: T_BLOB | BINARY | BINARY VARYING { }
389 text: T_TEXT | T_TEXT LPAREN INTEGER RPAREN | CHARACTER { }
391 %inline either(X,Y): X | Y { }
392 %inline commas(X): l=separated_nonempty_list(COMMA,X) { l }
394 %inline sequence_(X): LPAREN l=commas(X) { l }
395 %inline sequence(X): l=sequence_(X) RPAREN { l }
397 charset: CHARSET either(IDENT,BINARY) | CHARACTER SET either(IDENT,BINARY) | ASCII | UNICODE { }
398 collate: COLLATE IDENT { }
400 sql_type: t=sql_type_flavor
401 | t=sql_type_flavor LPAREN INTEGER RPAREN UNSIGNED?
402 | t=sql_type_flavor LPAREN INTEGER COMMA INTEGER RPAREN
405 compound_op: UNION ALL? | EXCEPT | INTERSECT { }
407 maybe_join_type: JOIN_TYPE1? JOIN_TYPE2? { }