MySQL 8.4.3
Source Code Documentation
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Creates a prepared statement for the passed query string.
The server returns a COM_STMT_PREPARE Response which contains a statement-id
which is ised to identify the prepared statement.
Type | Name | Description |
---|---|---|
int<1> | command | 0x16: COM_STMT_PREPARE |
string<EOF> | query | The query to prepare |
If COM_STMT_PREPARE succeeded, it sends a COM_STMT_PREPARE_OK
Type | Name | Description |
---|---|---|
int<1> | status | 0x00: OK: Ignored by cli_read_prepare_result |
int<4> | statement_id | statement ID |
int<2> | num_columns | Number of columns |
int<2> | num_params | Number of parameters |
int<1> | reserved_1 | [00] filler |
if (packet_lenght > 12) { | ||
int<2> | warning_count | Number of warnings |
if capabilities & CLIENT_OPTIONAL_RESULTSET_METADATA { | ||
int<1> | metadata_follows | Flag specifying if metadata are skipped or not. See enum_resultset_metadata |
} – CLIENT_OPTIONAL_RESULTSET_METADATA { | ||
} – packet_lenght > 12 |
if num_params
> 0 and CLIENT_OPTIONAL_RESULTSET_METADATA is not set or if medatdata_follows
is RESULTSET_METADATA_FULL num_params
packets will follow. Then a EOF_Packet will be transmitted, provided that CLIENT_DEPRECATE_EOF is not set.
Type | Name | Description |
---|---|---|
num_params * Column Definition | ||
if (not capabilities & CLIENT_DEPRECATE_EOF) { | ||
EOF_Packet | ||
} –CLIENT_DEPRECATE_EOF |
if num_columns
> 0 and CLIENT_OPTIONAL_RESULTSET_METADATA is not set or if medatdata_follows
is RESULTSET_METADATA_FULL num_columns
packets will follow. Then a EOF_Packet will be transmitted, provided that CLIENT_DEPRECATE_EOF is not set.
Type | Name | Description |
---|---|---|
num_columns * Column Definition | ||
if (not capabilities & CLIENT_DEPRECATE_EOF) { | ||
EOF_Packet | ||
} –CLIENT_DEPRECATE_EOF |