Error when sending text to mysql

I have difficulty sending texts to the mysql server, the 'status' field is receiving numbers instead of the text "no humidity"

this is my code:

#define pinsensorA A0
#define pinsensorD 8
#include <Ethernet.h>
#include <MySQL_Connection.h>
#include <MySQL_Cursor.h>
char query[128];
int leitura;
char str0 = "sem umidade";
char str1 = "com umidade";

byte mac_addr[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

IPAddress server_addr(X,X,X,X); // IP of the MySQL server here
char user[] = "guilherme7"; // MySQL user login username
char password[] = "local1108"; // MySQL user login password

// Sample query
char INSERT_SQL[] = "INSERT INTO umidade.teste (DEVICE_ID, NIVEL_UMIDADE, STATUS) VALUES ('1', '%d', '%d')";

EthernetClient client;
MySQL_Connection conn((Client *)&client);

void setup() {
Serial.begin(115200);
while (!Serial); // wait for serial port to connect
Ethernet.begin(mac_addr);
Serial.println("Connecting...");
if (conn.connect(server_addr, 3306, user, password)) {
delay(1000);
}
else
Serial.println("Connection failed.");
}

void loop() {
delay(2000);

if (analogRead(pinsensorA) > 700) {
leitura = analogRead(pinsensorA);
sprintf (query, INSERT_SQL, leitura, str0);

// Initiate the query class instance
MySQL_Cursor *cur_mem = new MySQL_Cursor(&conn);
// Execute the query
cur_mem->execute(query);
// Note: since there are no results, we do not need to read any data
// Deleting the cursor also frees up memory used
delete cur_mem;
}
}

Welcome to the forum

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Try changing this :
char str0 = "sem umidade";
to
char str0[ ] = "sem umidade";

and this:
('1', '%d', '%d')";
to
('1', '%d', '%s')";

Thank you for guidance

very good, thank you!!