Add MariaDB Connector/C as a built-in alternative (v3.2.3).

vendor/MDBC/man/mysql_sqlstate.3

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+.\" Automatically generated by Pandoc 2.5
+.\"
+.TH "mysql_sqlstate" "3" "" "Version 3.2.2" "MariaDB Connector/C"
+.hy
+.SS Name
+.PP
+mysql_sqlstate \- returns SQLSTATE error code
+.SS Synopsis
+.IP
+.nf
+\f[C]
+#include <mysql.h>
+
+const char * mysql_sqlstate(MYSQL * mysql);
+\f[R]
+.fi
+.SS Description
+.PP
+Returns a string containing the SQLSTATE error code for the most
+recently invoked function that can succeed or fail.
+The error code consists of five characters.
+`00000' means no error.
+The values are specified by ANSI SQL and ODBC
+.SS Parameter
+.SS Notes
+.PP
+Please note that not all client library error codes are mapped to
+SQLSTATE errors.
+Errors which can\[cq]t be mapped will returned as value HY000.
+.SS Return value
+.PP
+A string containing SQLSTATE error code.
+.SS See also
+.IP \[bu] 2
+\f[B]mysql_error(3)\f[R]
+.IP \[bu] 2
+\f[B]mysql_errno(3)\f[R]