Php mysql boolean update

How to deal with ‘Boolean’ values in PHP & MySQL?

We are using MySQL version 8.0.12. Let us first check the MySQL version:

mysql> select version(); +-----------+ | version() | +-----------+ | 8.0.12 | +-----------+ 1 row in set (0.00 sec)

To deal with Boolean in MySQL, you can use BOOL or BOOLEAN or TINYINT(1). If you use BOOL or BOOLEAN, then MySQL internally converts it into TINYINT(1).

In BOOL or BOOLEAN data type, if you use true literal then MySQL represents it as 1 and false literal as 0 like in PHP/ C/ C++ language.

To proof that MySQL convert the BOOL or BOOLEAN to TINYINT(1), let us create a table with BOOLEAN or BOOL column.

Here, we are creating a table with column BOOLEAN. The query to create a table is as follows:

mysql> create table BoolOrBooleanOrTinyintDemo -> ( -> Id int NOT NULL AUTO_INCREMENT, -> isvalidAddress BOOLEAN, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (0.74 sec)

Now check the DDL of the above table using SHOW CREATE command. The query is as follows:

mysql> show create table BoolOrBooleanOrTinyintDemo\G

The following is the output:

*************************** 1. row *************************** Table: BoolOrBooleanOrTinyintDemo Create Table: CREATE TABLE `boolorbooleanortinyintdemo` ( `Id` int(11) NOT NULL AUTO_INCREMENT, `isvalidAddress` tinyint(1) DEFAULT NULL, PRIMARY KEY (`Id`) ) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci 1 row in set (0.00 sec)

Look at the column isvalidAddress, the datatype BOOLEAN is converted into tinyint(1) internally. Now you can check the true literal will be represented by 1 and false literal by 0. Insert some records in the table with true and false literal values. The query to insert record is as follows:

mysql> insert into BoolOrBooleanOrTinyintDemo(isvalidAddress) values(true); Query OK, 1 row affected (0.43 sec) mysql> insert into BoolOrBooleanOrTinyintDemo(isvalidAddress) values(false); Query OK, 1 row affected (0.17 sec) mysql> insert into BoolOrBooleanOrTinyintDemo(isvalidAddress) values(true); Query OK, 1 row affected (0.29 sec) mysql> insert into BoolOrBooleanOrTinyintDemo(isvalidAddress) values(false); Query OK, 1 row affected (0.12 sec) mysql> insert into BoolOrBooleanOrTinyintDemo(isvalidAddress) values(true); Query OK, 1 row affected (0.33 sec)

Display all records from the table using select statement. The query to display all records is as follows:

mysql> select *from BoolOrBooleanOrTinyintDemo;

The following is the output:

+----+----------------+ | Id | isvalidAddress | +----+----------------+ | 1 | 1 | | 2 | 0 | | 3 | 1 | | 4 | 0 | | 5 | 1 | +----+----------------+ 5 rows in set (0.00 sec)

Look at the above sample output, true represents as 1 and false represents as 0.

In PHP, if you use true then it will be represented as 1 and false will be represented as 0.

Look at the following PHP code. Here, I have set the variable ‘isValidAddress’. The value is 1, that means it evaluates the if condition true and execute the body of if statement only. Check the following code:

$isValidAddress = 1; if($isValidAddress) < echo 'true is represented as '; echo ($isValidAddress); >else

Here is the snapshot of code:

The following is the output:

If you change the variable ‘isValidAddress’ to value 0. That means it evaluates the if condition false and execute the body of else statement only. The following is the code:

$isValidAddress=0; if($isValidAddress) < echo 'true is represented as '; echo ($isValidAddress); >else

Here is the snapshot of code:

The following is the output:

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How can I update the boolean values in mysql?

You can update boolean value using UPDATE command. Question: When I try to test manually updating the boolean value in my MySql table before implementing it into a ruby script, I get a match but no changes : Unless I’m mistaken, this looks like correct syntax to me.

How can I update the boolean values in mysql?

My table has an isSuccessful column, I set the datatype as boolean (0 indicates false, 1 indicates true), and by default is 0.

But when I want to update this column using php,

UPDATE . SET isSuccessful = 1 WHERE . 

I tried to set the isSuccessful as 1, true, yes, but none of them will work.

So how can I change the values of isSuccessful ?

A simple update query should suffice. Boolean fields are simply tinyint(1) fields and accept aliases for 1 and 0 as true and false respectively (as strings). The following should be fine. Perhaps if you posted your exact query rather than an abridged version someone might spot a problem?

UPDATE `table` SET `isSuccessful` = 1 WHERE `column` = 'criteria' 

Make Sure you put this » ` » character which is same key of the » ~ » on the left size of «1» key on the keyboard, that should do it, if you using PHP+ Mysql Under linux.

How to deal with ‘Boolean’ values in PHP & MySQL?, To deal with Boolean in MySQL, you can use BOOL or BOOLEAN or TINYINT (1). If you use BOOL or BOOLEAN, then MySQL internally converts it into TINYINT (1). In BOOL or BOOLEAN data type, if you use true literal then MySQL represents it as 1 and false literal as 0 like in PHP/ C/ C++ language. To proof …

MySql Updating boolean value

When I try to test manually updating the boolean value in my MySql table before implementing it into a ruby script, I get a match but no changes :

UPDATE calls SET ended = NOT ended WHERE incoming_Cid = ‘1234567890’;

Query OK, 0 rows affected (0.00 sec)

Rows matched: 1 Changed: 0 Warnings: 0

Unless I’m mistaken, this looks like correct syntax to me.

I looked at other threads concerning this issue (flipping boolean values ) like here.

What would be a better way to accomplish this?

UPDATE calls set ended = !ended WHERE incoming_Cid = '1234567890'; 

Most likely your ended value was an SQL NULL value. The logical not of a null value is still null, so the DB is properly reporting «no changes», because the value in ended didn’t change — it started out as null, and was still null:

mysql> create table foo (x boolean); mysql> insert into foo values (null); Query OK, 1 row affected (0.04 sec) mysql> update foo set x=not x; Query OK, 0 rows affected (0.00 sec) Rows matched: 1 Changed: 0 Warnings: 0 mysql> update foo set x=not x; Query OK, 0 rows affected (0.00 sec) Rows matched: 1 Changed: 0 Warnings: 0 

Note the Changed: 0 . But once you reset x to a non-null value:

mysql> update foo set x=true; Query OK, 1 row affected (0.06 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> update foo set x=not x; Query OK, 1 row affected (0.04 sec) Rows matched: 1 Changed: 1 Warnings: 0 

rows start changing immediately.

Visual studio — C# MySQL Update boolean, 1 Answer. Sorted by: 2. No, your query is not correct. If the field is a boolean then don’t set it using a string ‘1’ but directly with a numeric value of 1 or 0. After that, using an MySqlDataReader on an UPDATE query is meaningless because the UPDATE doesn’t return the row changed. You need a SELECT.

How can I update the boolean values in MySQL?

You can update boolean value using UPDATE command. If you use the BOOLEAN data type, MySQL internally convert it into tinyint(1). It can takes true or false literal in which true indicates 1 to tinyint(1) and false indicates 0 to tinyint(1).

UPDATE yourTableName SET yourColumnName = yourValue WHERE yourCondition;

To understand the above syntax, let us create a table. The query to create a table is as follows −

mysql> create table UpdateBooleans -> ( -> Id int NOT NULL AUTO_INCREMENT, -> isSuccessful BOOLEAN, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (1.55 sec)

Insert some records in the table using insert command. The query is as follows −

mysql> insert into UpdateBooleans(isSuccessful) values(true); Query OK, 1 row affected (0.17 sec) mysql> insert into UpdateBooleans(isSuccessful) values(false); Query OK, 1 row affected (0.21 sec) mysql> insert into UpdateBooleans(isSuccessful) values(true); Query OK, 1 row affected (0.13 sec) mysql> insert into UpdateBooleans(isSuccessful) values(false); Query OK, 1 row affected (0.15 sec) mysql> insert into UpdateBooleans(isSuccessful) values(false); Query OK, 1 row affected (0.24 sec) mysql> insert into UpdateBooleans(isSuccessful) values(false); Query OK, 1 row affected (0.17 sec) mysql> insert into UpdateBooleans(isSuccessful) values(true); Query OK, 1 row affected (0.12 sec)

Display all records from the table using select statement. The query is as follows −

mysql> select *from UpdateBooleans;

The following is the output −

+----+--------------+ | Id | isSuccessful | +----+--------------+ | 1 | 1 | | 2 | 0 | | 3 | 1 | | 4 | 0 | | 5 | 0 | | 6 | 0 | | **** rows in set (0.00 sec)

Here is the query to update boolean values. Let us update all 0s to 1:

mysql> update UpdateBooleans set isSuccessful = true where isSuccessful = false; Query OK, 4 rows affected (0.15 sec) Rows matched: 4 Changed: 4 Warnings: 0

Display the records from the table once again. The query is as follows:

mysql> select *from UpdateBooleans;

The following is the output:

+----+--------------+ | Id | isSuccessful | +----+--------------+ | 1 | 1 | | 2 | 1 | | 3 | 1 | | 4 | 1 | | 5 | 1 | | 6 | 1 | | **** rows in set (0.00 sec)

MySQL Workbench: trying to create a boolean field for a, I just did this and the DataType was changed to TINYINT (1). – Old Geezer. Feb 11, 2017 at 9:04. Add a comment. 1. To Create a Boolean Column in Table with default false. ALTER TABLE table_name ADD field_name tinyint (1); if default true. ALTER TABLE table_name ADD field_name tinyint (0);

MySQL conditionally UPDATE rows’ boolean column values based on a whitelist of ids

I’m trying to update a set of records ( boolean fields ) in a single query if possible.

The input is coming from paginated radio controls, so a given POST will have the page’s worth of IDs with a true or false value.

I was trying to go this direction:

UPDATE my_table SET field = CASE WHEN id IN (/* true ids */) THEN TRUE WHEN id IN (/* false ids */) THEN FALSE END 

But this resulted in the «true id» rows being updated to true , and ALL other rows were updated to false .

I assume I’ve made some gross syntactical error, or perhaps that I’m approaching this incorrectly.

Any thoughts on a solution?

Didn’t you forget to do an «ELSE» in the case statement?

UPDATE my_table SET field = CASE WHEN id IN (/* true ids */) THEN TRUE WHEN id IN (/* false ids */) THEN FALSE ELSE field=field END 

Without the ELSE, I assume the evaluation chain stops at the last WHEN and executes that update. Also, you are not limiting the rows that you are trying to update; if you don’t do the ELSE you should at least tell the update to only update the rows you want and not all the rows (as you are doing). Look at the WHERE clause below:

 UPDATE my_table SET field = CASE WHEN id IN (/* true ids */) THEN TRUE WHEN id IN (/* false ids */) THEN FALSE END WHERE id in (true ids + false_ids) 

You can avoid field = field

update my_table set field = case when id in (. ) then true when id in (. ) then false else field end 

You can avoid the use of a case block for this task because you are setting a conditional boolean value.

Declare all id s that should be changed in the WHERE clause.

Declare all of the true id values in the SET clause’s IN() condition. If any given id is found in the IN then the boolean value will become true , else false .

TABLE `my_table` ( `id` int(10) UNSIGNED NOT NULL, `my_boolean` boolean ) ENGINE=MyISAM DEFAULT CHARSET=latin1; ALTER TABLE `my_table` ADD PRIMARY KEY (`id`); INSERT INTO `my_table` VALUES (1,true), (2,false), (3,true), (4,false), (5,true), (6,false); UPDATE my_table SET my_boolean = (id IN (2,4)) WHERE id IN (2,3); SELECT * FROM my_table; 

id my_boolean 1 true 2 true #changed 3 false #changed 4 false 5 true 6 false 

Sql — MySql Updating boolean value, The logical not of a null value is still null, so the DB is properly reporting «no changes», because the value in ended didn’t change — it started out as null, and was still null: mysql> create table foo (x boolean); mysql> insert into foo values (null); Query OK, 1 row affected (0.04 sec) mysql> update foo set x=not x; …

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