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Show the text of individual statements within a trigger, as they

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execute, as comments in the output from sqlite3_trace() and sqlite3_trace_v2().

FossilOrigin-Name: fe3d2b97d8945e6a9636472f77bcdc92cc5dda8b3e6e3a4fcbdd0a212ea5b9aa
This commit is contained in:
drh
2017-12-27 20:38:35 +00:00
parent 9b2e0435d2
commit f259df5fc8
7 changed files with 84 additions and 39 deletions
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src/parse.y
+11 -13
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@@ -288,11 +288,8 @@ signed ::= minus_num.
//
%type scanpt {const char*}
scanpt(A) ::= . {
if( yyLookahead!=YYNOCODE ){
A = yyLookaheadToken.z;
}else{
A = pParse->sLastToken.z + pParse->sLastToken.n;
}
assert( yyLookahead!=YYNOCODE );
A = yyLookaheadToken.z;
}
// "carglist" is a list of additional constraints that come after the
@@ -1371,20 +1368,21 @@ tridxby ::= NOT INDEXED. {
%destructor trigger_cmd {sqlite3DeleteTriggerStep(pParse->db, $$);}
// UPDATE
trigger_cmd(A) ::=
UPDATE orconf(R) trnm(X) tridxby SET setlist(Y) where_opt(Z).
{A = sqlite3TriggerUpdateStep(pParse->db, &X, Y, Z, R);}
UPDATE(B) orconf(R) trnm(X) tridxby SET setlist(Y) where_opt(Z) scanpt(E).
{A = sqlite3TriggerUpdateStep(pParse->db, &X, Y, Z, R, B.z, E);}
// INSERT
trigger_cmd(A) ::= insert_cmd(R) INTO trnm(X) idlist_opt(F) select(S).
{A = sqlite3TriggerInsertStep(pParse->db, &X, F, S, R);/*A-overwrites-R*/}
trigger_cmd(A) ::= scanpt(B) insert_cmd(R) INTO
trnm(X) idlist_opt(F) select(S) scanpt(Z).
{A = sqlite3TriggerInsertStep(pParse->db,&X,F,S,R,B,Z);/*A-overwrites-R*/}
// DELETE
trigger_cmd(A) ::= DELETE FROM trnm(X) tridxby where_opt(Y).
{A = sqlite3TriggerDeleteStep(pParse->db, &X, Y);}
trigger_cmd(A) ::= DELETE(B) FROM trnm(X) tridxby where_opt(Y) scanpt(E).
{A = sqlite3TriggerDeleteStep(pParse->db, &X, Y, B.z, E);}
// SELECT
trigger_cmd(A) ::= select(X).
{A = sqlite3TriggerSelectStep(pParse->db, X); /*A-overwrites-X*/}
trigger_cmd(A) ::= scanpt(B) select(X) scanpt(E).
{A = sqlite3TriggerSelectStep(pParse->db, X, B, E); /*A-overwrites-X*/}
// The special RAISE expression that may occur in trigger programs
expr(A) ::= RAISE LP IGNORE RP. {