[Tarantool-patches] [PATCH 10/15] sql: add sql_schema_version()

[Nikita Pettik <korablev@tarantool.org>]

Let's introduce interface function to get schema version of prepared
statement. It is required since sturct sql_stmt (i.e. prepared
statement) is an opaque object and in fact is an alias to struct Vdbe.

Need for #2592
---
 src/box/sql/sqlInt.h  | 3 +++
 src/box/sql/vdbeapi.c | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/src/box/sql/sqlInt.h b/src/box/sql/sqlInt.h
index 1c02bd972..3a1e6d9b4 100644
--- a/src/box/sql/sqlInt.h
+++ b/src/box/sql/sqlInt.h
@@ -561,6 +561,9 @@ sql_column_name(sql_stmt *, int N);
 const char *
 sql_column_datatype(sql_stmt *, int N);
 
+uint32_t
+sql_schema_version(sql_stmt *stmt);
+
 int
 sql_initialize(void);
 
diff --git a/src/box/sql/vdbeapi.c b/src/box/sql/vdbeapi.c
index 482a42288..23c4a250a 100644
--- a/src/box/sql/vdbeapi.c
+++ b/src/box/sql/vdbeapi.c
@@ -798,6 +798,12 @@ sql_column_decltype(sql_stmt * pStmt, int N)
 			  COLNAME_DECLTYPE);
 }
 
+uint32_t
+sql_schema_version(sql_stmt *stmt)
+{
+	return ((struct Vdbe *)stmt)->schema_ver;
+}
+
 /******************************* sql_bind_  **************************
  *
  * Routines used to attach values to wildcards in a compiled SQL statement.
-- 
2.15.1