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3 min readIn Oracle SQL, you can write a loop statement by using the LOOP and END LOOP keywords.Here is an example of a simple loop statement in Oracle SQL: DECLARE counter NUMBER := 1; BEGIN LOOP EXIT WHEN counter > 10; DBMS_OUTPUT.PUT_LINE('Counter is: ' || counter); counter := counter + 1; END LOOP; END; In this example, the loop will continue to iterate until the counter reaches a value greater than 10. The DBMS_OUTPUT.
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3 min readTo get age in years, months, and days using Oracle, you can use a combination of functions to calculate the difference between the birthdate and the current date. You can use the MONTHS_BETWEEN function to get the difference in months, and then use the TRUNC function to get the integer value of that difference.Next, you can use the EXTRACT function to extract the year and month values from the remaining difference.
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5 min readTo convert signed numbers in Oracle SQL, you can use the ABS function to find the absolute value of a number. This function returns the positive value of a number, regardless of its original sign. For example, ABS(-10) would return 10.You can also use the CASE statement to convert signed numbers. By using a CASE statement, you can check the sign of a number and then apply an appropriate conversion logic based on the sign.
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7 min readIn Oracle, you can preserve trailing zeros for a number by using the TO_CHAR function with a format mask. You can specify the desired number of decimal places and whether or not to display trailing zeros. For example, if you want to display a number with 2 decimal places and preserve trailing zeros, you can use the format mask '990.00'. This will ensure that the number is displayed with two decimal places and any trailing zeros are preserved.
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6 min readTo give column values as XML element names in Oracle, you can use the XMLFOREST function in SQL. This function allows you to specify the column value and the element name that you want to assign to it in the resulting XML.
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3 min readIn Oracle, you can combine local variables by using the CONCAT function. The CONCAT function allows you to concatenate two or more strings together.For example, if you have two local variables, var1 and var2, you can combine them like this:var_final := var1 || var2;This will combine the values of var1 and var2 and store the result in var_final.You can also use CONCAT function to achieve the same result:var_final := CONCAT(var1, var2);This function works in a similar way to using the || operator.
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5 min readConverting a procedure from SQL Server into Oracle can be a straightforward process if you follow these steps:Review the SQL Server procedure code and note any SQL Server specific syntax or features that need to be modified for compatibility with Oracle.Create a new procedure in Oracle using the PL/SQL language.Map the SQL Server data types to their Oracle equivalents. Make sure to account for any differences in data type definitions, such as length constraints or precision/scale settings.
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5 min readIn Oracle, the SUBSTR function is used to extract a substring from a string.
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3 min readTo get the year with a fractional part from a date in Oracle, you can use the TO_CHAR function along with the format specifier 'YYYY.FF'. This format specifier allows you to display the year with the fractional part of the year in the date.For example, if you have a date column named "date_column" in a table called "example_table", you can use the following SQL query to get the year with a fractional part from the date:SELECT TO_CHAR(date_column, 'YYYY.
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3 min readTo convert a date to a datetime in Oracle, you can simply cast the date as a timestamp using the TO_TIMESTAMP function. This function takes the date as an argument and converts it to a timestamp datatype. For example, if you have a date column named 'date_column' in a table named 'table_name', you can convert it to a datetime by using the following SQL query:SELECT TO_TIMESTAMP(date_column) FROM table_name;This will convert the date to a datetime format in Oracle.
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3 min readTo create a regular expression for querying Oracle, you can use the REGEXP_LIKE function available in Oracle SQL. This function allows you to search for patterns within a text column using regular expressions.To use REGEXP_LIKE, you need to specify the column you want to search, the regular expression pattern you are looking for, and any additional parameters such as case sensitivity or matching options.