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Add the ".eqp trigger" option to the ".eqp" command in the command-line

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shell.  Implemented using the new SQLITE_DBCONFIG_TRIGGER_EQP control.

FossilOrigin-Name: 2c51644a12a638d89e4f7cc3fd561236ce424f2d4e1db31f1e8388f77add02b8
This commit is contained in:
drh
2017-12-21 21:02:27 +00:00
parent 2e1ea57f8b
commit ada7045eab
3 changed files with 29 additions and 14 deletions
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src/shell.c.in
+21 -6
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@@ -877,6 +877,13 @@ struct ShellState {
ExpertInfo expert; /* Valid if previous command was ".expert OPT..." */
};
/* Allowed values for ShellState.autoEQP
*/
#define AUTOEQP_off 0
#define AUTOEQP_on 1
#define AUTOEQP_trigger 2
#define AUTOEQP_full 3
/*
** These are the allowed shellFlgs values
*/
@@ -2395,7 +2402,12 @@ static int shell_exec(
if( pArg && pArg->autoEQP && sqlite3_strlike("EXPLAIN%",zStmtSql,0)!=0 ){
sqlite3_stmt *pExplain;
char *zEQP;
int triggerEQP = 0;
disable_debug_trace_modes();
sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, -1, &triggerEQP);
if( pArg->autoEQP>=AUTOEQP_trigger ){
sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, 1, 0);
}
zEQP = sqlite3_mprintf("EXPLAIN QUERY PLAN %s", zStmtSql);
rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0);
if( rc==SQLITE_OK ){
@@ -2408,7 +2420,7 @@ static int shell_exec(
}
sqlite3_finalize(pExplain);
sqlite3_free(zEQP);
if( pArg->autoEQP>=2 ){
if( pArg->autoEQP>=AUTOEQP_full ){
/* Also do an EXPLAIN for ".eqp full" mode */
zEQP = sqlite3_mprintf("EXPLAIN %s", zStmtSql);
rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0);
@@ -2421,6 +2433,7 @@ static int shell_exec(
sqlite3_finalize(pExplain);
sqlite3_free(zEQP);
}
sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, triggerEQP, 0);
restore_debug_trace_modes();
}
@@ -4547,12 +4560,14 @@ static int do_meta_command(char *zLine, ShellState *p){
if( c=='e' && strncmp(azArg[0], "eqp", n)==0 ){
if( nArg==2 ){
if( strcmp(azArg[1],"full")==0 ){
p->autoEQP = 2;
p->autoEQP = AUTOEQP_full;
}else if( strcmp(azArg[1],"trigger")==0 ){
p->autoEQP = AUTOEQP_trigger;
}else{
p->autoEQP = booleanValue(azArg[1]);
}
}else{
raw_printf(stderr, "Usage: .eqp on|off|full\n");
raw_printf(stderr, "Usage: .eqp off|on|trigger|full\n");
rc = 1;
}
}else
@@ -5905,7 +5920,7 @@ static int do_meta_command(char *zLine, ShellState *p){
}else
if( c=='s' && strncmp(azArg[0], "show", n)==0 ){
static const char *azBool[] = { "off", "on", "full", "unk" };
static const char *azBool[] = { "off", "on", "trigger", "full"};
int i;
if( nArg!=1 ){
raw_printf(stderr, "Usage: .show\n");
@@ -7057,9 +7072,9 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
}else if( strcmp(z,"-echo")==0 ){
ShellSetFlag(&data, SHFLG_Echo);
}else if( strcmp(z,"-eqp")==0 ){
data.autoEQP = 1;
data.autoEQP = AUTOEQP_on;
}else if( strcmp(z,"-eqpfull")==0 ){
data.autoEQP = 2;
data.autoEQP = AUTOEQP_full;
}else if( strcmp(z,"-stats")==0 ){
data.statsOn = 1;
}else if( strcmp(z,"-scanstats")==0 ){