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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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29
sql/sql_prepare.cc
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@ -1386,15 +1386,26 @@ 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
send_prepare_results()
stmt prepared statement
check_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
0 success
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;
LEX *lex= stmt->lex;
@ -1402,7 +1413,7 @@ static int send_prepare_results(Prepared_statement *stmt, bool text_protocol)
TABLE_LIST *tables;
enum enum_sql_command sql_command= lex->sql_command;
int res= 0;
DBUG_ENTER("send_prepare_results");
DBUG_ENTER("check_prepared_statement");
DBUG_PRINT("enter",("command: %d, param_count: %ld",
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 ||
thd->net.report_error || init_param_array(stmt);
/*
While doing context analysis of the query (in send_prepare_results) we
allocate a lot of additional memory: for open tables, JOINs, derived
While doing context analysis of the query (in check_prepared_statement)
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
statement and restore original THD. In cases when some tree
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);
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 */
if (!(specialflag & SPECIAL_NO_PRIOR))
@ -1681,7 +1692,7 @@ int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length,
stmt= NULL;
if (thd->net.report_error)
send_error(thd);
/* otherwise the error is sent inside yyparse/send_prepare_results */
/* otherwise the error is sent inside yyparse/check_preapred_statement */
}
else
{