Questions : How can I cast a string into a boolean in mysql query
2022-09-21T11:15:00+00:00 2022-09-21T11:15:00+00:00
897
In MSSQL query there is the following line, anycodings_mysql resulted in a boolean
IS_IDENTITY = COLUMNPROPERTY(OBJECT_ID('#attributes.table#'), INFORMATION_SCHEMA.COLUMNS.COLUMN_NAME, 'IsIdentity')in MYsql, I can only use subquery, but it anycodings_mysql ends in a string.
(SELECT COLUMN_NAME INFORMATION_SCHEMA.COLUMNS.KEY_COLUMN_USAGE.CONSTRAINTS_NAME = "PRIMARY") AS RESULTHow can I cast the "RESULT" into a boolean anycodings_mysql from a string in a mysql query?
Thanks.
Total Answers 3
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Answers 1 : of How can I cast a string into a boolean in mysql query
The CASE Statement could be what you are anycodings_mysql looking for, but this is just a guess. anycodings_mysql Could you try to reformulate your anycodings_mysql question so it gets a bit more anycodings_mysql understandable what you are doing and anycodings_mysql what your use case is?
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2022-09-21T11:15:00+00:00 2022-09-21T11:15:00+00:00Answer Link
mRahman
4
Answers 2 : of How can I cast a string into a boolean in mysql query
Try to cast it to tinyINT(1). This is anycodings_mysql equivalent to boolean.
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2022-09-21T11:15:00+00:00 2022-09-21T11:15:00+00:00Answer Link
jidam
4
Answers 3 : of How can I cast a string into a boolean in mysql query
MySQL does not have a function like SQL anycodings_mysql Server's COLUMNPROPERTY, but you can anycodings_mysql create your own:
And then use it in a query:
select f_column_property('mydb', 'mytable', 'mycolumn', 'PRIMARY') as 'is_identity'See documentation.
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2022-09-21T11:15:00+00:00 2022-09-21T11:15:00+00:00Answer Link
jidam
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Convert TinyInt to Boolean MySQL has now become a simple process. Bobcares, as a part of our MySQL Support Services offers solutions to every MySQL queries that comes our way.
Convert TinyInt To Boolean In MySQL
A TINYINT is an 8-bit integer value, a BIT field can store between 1 bit, BIT(1), and 64 bits, BIT(64). For boolean values, BIT(1) is pretty common. TINYINT uses 1 byte of storage and is the smallest integer data type. (1) in the Tinyint(1) is for formatting options, which are typically ignored. It would be irrelevant if we created it as tinyint(100).
While determining whether something is TRUE or FALSE, any int (int, tinyint, smallint, bigint) value converts to a boolean value. If it’s 0, it’s considered FALSE; if not, it’s considered TRUE. So, 2 is also TRUE here. BOOL, BOOLEAN are synonyms for TINYINT(1).
mysql> SELECT IF(0, 'true', 'false'); +------------------------+ | IF(0, 'true', 'false') | +------------------------+ | false | +------------------------+mysql> SELECT IF(1, 'true', 'false'); +------------------------+ | IF(1, 'true', 'false') | +------------------------+ | true | +------------------------+mysql> SELECT IF(2, 'true', 'false'); +------------------------+ | IF(2, 'true', 'false') | +------------------------+ | true | +------------------------+However, as shown here, the values TRUE and FALSE are merely aliases for 1 and 0, respectively.
mysql> SELECT IF(0 = FALSE, 'true', 'false'); +--------------------------------+ | IF(0 = FALSE, 'true', 'false') | +--------------------------------+ | true | +--------------------------------+mysql> SELECT IF(1 = TRUE, 'true', 'false'); +-------------------------------+ | IF(1 = TRUE, 'true', 'false') | +-------------------------------+ | true | +-------------------------------+mysql> SELECT IF(2 = TRUE, 'true', 'false'); +-------------------------------+ | IF(2 = TRUE, 'true', 'false') | +-------------------------------+ | false | +-------------------------------+mysql> SELECT IF(2 = FALSE, 'true', 'false'); +--------------------------------+ | IF(2 = FALSE, 'true', 'false') | +--------------------------------+ | false | +--------------------------------+Tinyint(1) in MySQL is the equivalent of boolean. Although it can store values between -127 and 127, by default, SQL Runner will display the values as “true” for non-zero values and “false” for zero values.
How To Convert TinyInt To Boolean In MySQL?
- By using a cast: SELECT cast(tiny_int_value as signed) FROM table
- Another way is by updating the database connection. Then add this as an additional parameter: tinyInt1isBit=false
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Conclusion
In this article, our skilled Support Engineers at Bobcares took us through converting tinyint to boolean in MySQL.
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