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26 cze 2019 · If your data is 'test', 'test0', 'test1111', '111test', '111'. To select all records where the data is a simple int: SELECT * FROM myTable WHERE col1 REGEXP '^ [0-9]+$'; Result: '111'. (In regex, ^ means begin, and $ means end) To select all records where an integer or decimal number exists:
26 kwi 2016 · Simply use SIGN() in mysql It returns 1 as a positive value and -1 is a negative value. Example. SELECT SIGN(500); -- (Output is 1) SELECT SIGN(2500); -- (Output is 1) SELECT SIGN(-999); -- (Output is -1) SELECT SIGN(-5); -- (Output is -1)
Syntax. IF (condition, value_if_true, value_if_false) Parameter Values. Technical Details. Works in: From MySQL 4.0. More Examples. Example. Return 5 if the condition is TRUE, or 10 if the condition is FALSE: SELECT IF (500<1000, 5, 10); Try it Yourself » Example. Test whether two strings are the same and return "YES" if they are, or "NO" if not:
Use parentheses to force the order of evaluation in an expression. For example: mysql> SELECT 1+2*3; -> 7 mysql> SELECT (1+2)*3; -> 9. Comparison operators. Comparison operations result in a value of 1 (TRUE), 0 (FALSE), or NULL. These functions work for both numbers and strings.
19 paź 2018 · In MySQL, the SIGN() function returns the sign of a number. That is, it indicates whether or not the value is a positive number, a negative number, or zero. You provide the value as an argument when calling the function.
28 wrz 2020 · SIGN() function in MySQL is used to return the sign of the given number. It returns 1 if the number is positive, -1 if the number is negative and 0 for zero. Syntax : SIGN(X) Parameter : SIGN() function accepts one parameter as input and will give you the results in values like Positive(+1),Negative(-1) and Zero(0).
19 lut 2016 · Take ABS () of the difference, and compare it to some epsilon acceptable difference, perhaps 0.0000005. If it's less than that, the input can be represented as DECIMAL (9,6), which is probably the datatype you should use in your table. abs ( cast (@input as float) - cast (@input as decimal (9,6) ) < 0.0000005.
