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Rename: send_prepare_results -> check_prepared_statement (sql_prepare.cc)

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konstantin@mysql.com
2004-11-11 23:30:39 +03:00
parent 1d32e06be9
commit dad42cb4ee
1 changed files with 21 additions and 10 deletions
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31
sql/sql_prepare.cc
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@ -1386,23 +1386,34 @@ static int mysql_test_insert_select(Prepared_statement *stmt,
/* /*
Send the prepare query results back to client Perform semantic analysis of the parsed tree and send a response packet
to the client.
SYNOPSIS SYNOPSIS
send_prepare_results() check_prepared_statement()
stmt prepared statement stmt prepared statement
DESCRIPTION
This function
- opens all tables and checks access rights
- validates semantics of statement columns and SQL functions
by calling fix_fields.
RETURN VALUE RETURN VALUE
0 success 0 success
1 error, sent to client 1 error, sent to client
*/ */
static int send_prepare_results(Prepared_statement *stmt, bool text_protocol)
{ static int check_prepared_statement(Prepared_statement *stmt,
bool text_protocol)
{
THD *thd= stmt->thd; THD *thd= stmt->thd;
LEX *lex= stmt->lex; LEX *lex= stmt->lex;
SELECT_LEX *select_lex= &lex->select_lex; SELECT_LEX *select_lex= &lex->select_lex;
TABLE_LIST *tables; TABLE_LIST *tables;
enum enum_sql_command sql_command= lex->sql_command; enum enum_sql_command sql_command= lex->sql_command;
int res= 0; int res= 0;
DBUG_ENTER("send_prepare_results"); DBUG_ENTER("check_prepared_statement");
DBUG_PRINT("enter",("command: %d, param_count: %ld", DBUG_PRINT("enter",("command: %d, param_count: %ld",
sql_command, stmt->param_count)); sql_command, stmt->param_count));
@ -1644,8 +1655,8 @@ int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length,
error= yyparse((void *)thd) || thd->is_fatal_error || error= yyparse((void *)thd) || thd->is_fatal_error ||
thd->net.report_error || init_param_array(stmt); thd->net.report_error || init_param_array(stmt);
/* /*
While doing context analysis of the query (in send_prepare_results) we While doing context analysis of the query (in check_prepared_statement)
allocate a lot of additional memory: for open tables, JOINs, derived we allocate a lot of additional memory: for open tables, JOINs, derived
tables, etc. Let's save a snapshot of current parse tree to the tables, etc. Let's save a snapshot of current parse tree to the
statement and restore original THD. In cases when some tree statement and restore original THD. In cases when some tree
transformation can be reused on execute, we set again thd->mem_root from transformation can be reused on execute, we set again thd->mem_root from
@ -1654,7 +1665,7 @@ int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length,
thd->restore_backup_item_arena(stmt, &thd->stmt_backup); thd->restore_backup_item_arena(stmt, &thd->stmt_backup);
if (!error) if (!error)
error= send_prepare_results(stmt, test(name)); error= check_prepared_statement(stmt, test(name));
/* restore to WAIT_PRIOR: QUERY_PRIOR is set inside alloc_query */ /* restore to WAIT_PRIOR: QUERY_PRIOR is set inside alloc_query */
if (!(specialflag & SPECIAL_NO_PRIOR)) if (!(specialflag & SPECIAL_NO_PRIOR))
@ -1681,7 +1692,7 @@ int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length,
stmt= NULL; stmt= NULL;
if (thd->net.report_error) if (thd->net.report_error)
send_error(thd); send_error(thd);
/* otherwise the error is sent inside yyparse/send_prepare_results */ /* otherwise the error is sent inside yyparse/check_preapred_statement */
} }
else else
{ {