mysql_stmt_prepare

mysql_stmt_prepare
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mysql_stmt_prepare — Prepares a SQL statement for execution

int mysql_stmt_prepare(MYSQL_STMT * stmt,
                       const char * query,
                       unsigned long);

Prepares the SQL query pointed to by the null-terminated string query.

Parameters

stmt: A statement handle, which was previously allocated by mysql_stmt_init().
query: SQL statement
long: Length of SQL statement

Return value

Zero on success, non-zero on failure


The parameter markers must be bound to application variables using `mysql_stmt_bind_param().` The markers are legal only in certain places in SQL statements. For example, they are allowed in the VALUES() list of an INSERT statement (to specify column values for a row), or in a comparison with a column in a WHERE clause to specify a comparison value. However, they are not allowed for identifiers (such as table or column names), in the select list that names the columns to be returned by a SELECT statement), or to specify both operands of a binary operator such as the = equal sign. The latter restriction is necessary because it would be impossible to determine the parameter type. In general, parameters are legal only in Data Manipulation Language (DML) statements, and not in Data Definition Language (DDL) statements.

The parameter markers must be bound to application variables using mysql_stmt_bind_param().

The markers are legal only in certain places in SQL statements. For example, they are allowed in the VALUES() list of an INSERT statement (to specify column values for a row), or in a comparison with a column in a WHERE clause to specify a comparison value.

However, they are not allowed for identifiers (such as table or column names), in the select list that names the columns to be returned by a SELECT statement), or to specify both operands of a binary operator such as the = equal sign. The latter restriction is necessary because it would be impossible to determine the parameter type. In general, parameters are legal only in Data Manipulation Language (DML) statements, and not in Data Definition Language (DDL) statements.

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Parameters

Return value

See also