// Copyright 2015 The Xorm Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package xorm import ( "errors" "fmt" "net/url" "strconv" "strings" "github.com/go-xorm/core" ) // from http://www.postgresql.org/docs/current/static/sql-keywords-appendix.html var ( postgresReservedWords = map[string]bool{ "A": true, "ABORT": true, "ABS": true, "ABSENT": true, "ABSOLUTE": true, "ACCESS": true, "ACCORDING": true, "ACTION": true, "ADA": true, "ADD": true, "ADMIN": true, "AFTER": true, "AGGREGATE": true, "ALL": true, "ALLOCATE": true, "ALSO": true, "ALTER": true, "ALWAYS": true, "ANALYSE": true, "ANALYZE": true, "AND": true, "ANY": true, "ARE": true, "ARRAY": true, "ARRAY_AGG": true, "ARRAY_MAX_CARDINALITY": true, "AS": true, "ASC": true, "ASENSITIVE": true, "ASSERTION": true, "ASSIGNMENT": true, "ASYMMETRIC": true, "AT": true, "ATOMIC": true, "ATTRIBUTE": true, "ATTRIBUTES": true, "AUTHORIZATION": true, "AVG": true, "BACKWARD": true, "BASE64": true, "BEFORE": true, "BEGIN": true, "BEGIN_FRAME": true, "BEGIN_PARTITION": true, "BERNOULLI": true, "BETWEEN": true, "BIGINT": true, "BINARY": true, "BIT": true, "BIT_LENGTH": true, "BLOB": true, "BLOCKED": true, "BOM": true, "BOOLEAN": true, "BOTH": true, "BREADTH": true, "BY": true, "C": true, "CACHE": true, "CALL": true, "CALLED": true, "CARDINALITY": true, "CASCADE": true, "CASCADED": true, "CASE": true, "CAST": true, "CATALOG": true, "CATALOG_NAME": true, "CEIL": true, "CEILING": true, "CHAIN": true, "CHAR": true, "CHARACTER": true, "CHARACTERISTICS": true, "CHARACTERS": true, "CHARACTER_LENGTH": true, "CHARACTER_SET_CATALOG": true, "CHARACTER_SET_NAME": true, "CHARACTER_SET_SCHEMA": true, "CHAR_LENGTH": true, "CHECK": true, "CHECKPOINT": true, "CLASS": true, "CLASS_ORIGIN": true, "CLOB": true, "CLOSE": true, "CLUSTER": true, "COALESCE": true, "COBOL": true, "COLLATE": true, "COLLATION": true, "COLLATION_CATALOG": true, "COLLATION_NAME": true, "COLLATION_SCHEMA": true, "COLLECT": true, "COLUMN": true, "COLUMNS": true, "COLUMN_NAME": true, "COMMAND_FUNCTION": true, "COMMAND_FUNCTION_CODE": true, "COMMENT": true, "COMMENTS": true, "COMMIT": true, "COMMITTED": true, "CONCURRENTLY": true, "CONDITION": true, "CONDITION_NUMBER": true, "CONFIGURATION": true, "CONNECT": true, "CONNECTION": true, "CONNECTION_NAME": true, "CONSTRAINT": true, "CONSTRAINTS": true, "CONSTRAINT_CATALOG": true, "CONSTRAINT_NAME": true, "CONSTRAINT_SCHEMA": true, "CONSTRUCTOR": true, "CONTAINS": true, "CONTENT": true, "CONTINUE": true, "CONTROL": true, "CONVERSION": true, "CONVERT": true, "COPY": true, "CORR": true, "CORRESPONDING": true, "COST": true, "COUNT": true, "COVAR_POP": true, "COVAR_SAMP": true, "CREATE": true, "CROSS": true, "CSV": true, "CUBE": true, "CUME_DIST": true, "CURRENT": true, "CURRENT_CATALOG": true, "CURRENT_DATE": true, "CURRENT_DEFAULT_TRANSFORM_GROUP": true, "CURRENT_PATH": true, "CURRENT_ROLE": true, "CURRENT_ROW": true, "CURRENT_SCHEMA": true, "CURRENT_TIME": true, "CURRENT_TIMESTAMP": true, "CURRENT_TRANSFORM_GROUP_FOR_TYPE": true, "CURRENT_USER": true, "CURSOR": true, "CURSOR_NAME": true, "CYCLE": true, "DATA": true, "DATABASE": true, "DATALINK": true, "DATE": true, "DATETIME_INTERVAL_CODE": true, "DATETIME_INTERVAL_PRECISION": true, "DAY": true, "DB": true, "DEALLOCATE": true, "DEC": true, "DECIMAL": true, "DECLARE": true, "DEFAULT": true, "DEFAULTS": true, "DEFERRABLE": true, "DEFERRED": true, "DEFINED": true, "DEFINER": true, "DEGREE": true, "DELETE": true, "DELIMITER": true, "DELIMITERS": true, "DENSE_RANK": true, "DEPTH": true, "DEREF": true, "DERIVED": true, "DESC": true, "DESCRIBE": true, "DESCRIPTOR": true, "DETERMINISTIC": true, "DIAGNOSTICS": true, "DICTIONARY": true, "DISABLE": true, "DISCARD": true, "DISCONNECT": true, "DISPATCH": true, "DISTINCT": true, "DLNEWCOPY": true, "DLPREVIOUSCOPY": true, "DLURLCOMPLETE": true, "DLURLCOMPLETEONLY": true, "DLURLCOMPLETEWRITE": true, "DLURLPATH": true, "DLURLPATHONLY": true, "DLURLPATHWRITE": true, "DLURLSCHEME": true, "DLURLSERVER": true, "DLVALUE": true, "DO": true, "DOCUMENT": true, "DOMAIN": true, "DOUBLE": true, "DROP": true, "DYNAMIC": true, "DYNAMIC_FUNCTION": true, "DYNAMIC_FUNCTION_CODE": true, "EACH": true, "ELEMENT": true, "ELSE": true, "EMPTY": true, "ENABLE": true, "ENCODING": true, "ENCRYPTED": true, "END": true, "END-EXEC": true, "END_FRAME": true, "END_PARTITION": true, "ENFORCED": true, "ENUM": true, "EQUALS": true, "ESCAPE": true, "EVENT": true, "EVERY": true, "EXCEPT": true, "EXCEPTION": true, "EXCLUDE": true, "EXCLUDING": true, "EXCLUSIVE": true, "EXEC": true, "EXECUTE": true, "EXISTS": true, "EXP": true, "EXPLAIN": true, "EXPRESSION": true, "EXTENSION": true, "EXTERNAL": true, "EXTRACT": true, "FALSE": true, "FAMILY": true, "FETCH": true, "FILE": true, "FILTER": true, "FINAL": true, "FIRST": true, "FIRST_VALUE": true, "FLAG": true, "FLOAT": true, "FLOOR": true, "FOLLOWING": true, "FOR": true, "FORCE": true, "FOREIGN": true, "FORTRAN": true, "FORWARD": true, "FOUND": true, "FRAME_ROW": true, "FREE": true, "FREEZE": true, "FROM": true, "FS": true, "FULL": true, "FUNCTION": true, "FUNCTIONS": true, "FUSION": true, "G": true, "GENERAL": true, "GENERATED": true, "GET": true, "GLOBAL": true, "GO": true, "GOTO": true, "GRANT": true, "GRANTED": true, "GREATEST": true, "GROUP": true, "GROUPING": true, "GROUPS": true, "HANDLER": true, "HAVING": true, "HEADER": true, "HEX": true, "HIERARCHY": true, "HOLD": true, "HOUR": true, "ID": true, "IDENTITY": true, "IF": true, "IGNORE": true, "ILIKE": true, "IMMEDIATE": true, "IMMEDIATELY": true, "IMMUTABLE": true, "IMPLEMENTATION": true, "IMPLICIT": true, "IMPORT": true, "IN": true, "INCLUDING": true, "INCREMENT": true, "INDENT": true, "INDEX": true, "INDEXES": true, "INDICATOR": true, "INHERIT": true, "INHERITS": true, "INITIALLY": true, "INLINE": true, "INNER": true, "INOUT": true, "INPUT": true, "INSENSITIVE": true, "INSERT": true, "INSTANCE": true, "INSTANTIABLE": true, "INSTEAD": true, "INT": true, "INTEGER": true, "INTEGRITY": true, "INTERSECT": true, "INTERSECTION": true, "INTERVAL": true, "INTO": true, "INVOKER": true, "IS": true, "ISNULL": true, "ISOLATION": true, "JOIN": true, "K": true, "KEY": true, "KEY_MEMBER": true, "KEY_TYPE": true, "LABEL": true, "LAG": true, "LANGUAGE": true, "LARGE": true, "LAST": true, "LAST_VALUE": true, "LATERAL": true, "LC_COLLATE": true, "LC_CTYPE": true, "LEAD": true, "LEADING": true, "LEAKPROOF": true, "LEAST": true, "LEFT": true, "LENGTH": true, "LEVEL": true, "LIBRARY": true, "LIKE": true, "LIKE_REGEX": true, "LIMIT": true, "LINK": true, "LISTEN": true, "LN": true, "LOAD": true, "LOCAL": true, "LOCALTIME": true, "LOCALTIMESTAMP": true, "LOCATION": true, "LOCATOR": true, "LOCK": true, "LOWER": true, "M": true, "MAP": true, "MAPPING": true, "MATCH": true, "MATCHED": true, "MATERIALIZED": true, "MAX": true, "MAXVALUE": true, "MAX_CARDINALITY": true, "MEMBER": true, "MERGE": true, "MESSAGE_LENGTH": true, "MESSAGE_OCTET_LENGTH": true, "MESSAGE_TEXT": true, "METHOD": true, "MIN": true, "MINUTE": true, "MINVALUE": true, "MOD": true, "MODE": true, "MODIFIES": true, "MODULE": true, "MONTH": true, "MORE": true, "MOVE": true, "MULTISET": true, "MUMPS": true, "NAME": true, "NAMES": true, "NAMESPACE": true, "NATIONAL": true, "NATURAL": true, "NCHAR": true, "NCLOB": true, "NESTING": true, "NEW": true, "NEXT": true, "NFC": true, "NFD": true, "NFKC": true, "NFKD": true, "NIL": true, "NO": true, "NONE": true, "NORMALIZE": true, "NORMALIZED": true, "NOT": true, "NOTHING": true, "NOTIFY": true, "NOTNULL": true, "NOWAIT": true, "NTH_VALUE": true, "NTILE": true, "NULL": true, "NULLABLE": true, "NULLIF": true, "NULLS": true, "NUMBER": true, "NUMERIC": true, "OBJECT": true, "OCCURRENCES_REGEX": true, "OCTETS": true, "OCTET_LENGTH": true, "OF": true, "OFF": true, "OFFSET": true, "OIDS": true, "OLD": true, "ON": true, "ONLY": true, "OPEN": true, "OPERATOR": true, "OPTION": true, "OPTIONS": true, "OR": true, "ORDER": true, "ORDERING": true, "ORDINALITY": true, "OTHERS": true, "OUT": true, "OUTER": true, "OUTPUT": true, "OVER": true, "OVERLAPS": true, "OVERLAY": true, "OVERRIDING": true, "OWNED": true, "OWNER": true, "P": true, "PAD": true, "PARAMETER": true, "PARAMETER_MODE": true, "PARAMETER_NAME": true, "PARAMETER_ORDINAL_POSITION": true, "PARAMETER_SPECIFIC_CATALOG": true, "PARAMETER_SPECIFIC_NAME": true, "PARAMETER_SPECIFIC_SCHEMA": true, "PARSER": true, "PARTIAL": true, "PARTITION": true, "PASCAL": true, "PASSING": true, "PASSTHROUGH": true, "PASSWORD": true, "PATH": true, "PERCENT": true, "PERCENTILE_CONT": true, "PERCENTILE_DISC": true, "PERCENT_RANK": true, "PERIOD": true, "PERMISSION": true, "PLACING": true, "PLANS": true, "PLI": true, "PORTION": true, "POSITION": true, "POSITION_REGEX": true, "POWER": true, "PRECEDES": true, "PRECEDING": true, "PRECISION": true, "PREPARE": true, "PREPARED": true, "PRESERVE": true, "PRIMARY": true, "PRIOR": true, "PRIVILEGES": true, "PROCEDURAL": true, "PROCEDURE": true, "PROGRAM": true, "PUBLIC": true, "QUOTE": true, "RANGE": true, "RANK": true, "READ": true, "READS": true, "REAL": true, "REASSIGN": true, "RECHECK": true, "RECOVERY": true, "RECURSIVE": true, "REF": true, "REFERENCES": true, "REFERENCING": true, "REFRESH": true, "REGR_AVGX": true, "REGR_AVGY": true, "REGR_COUNT": true, "REGR_INTERCEPT": true, "REGR_R2": true, "REGR_SLOPE": true, "REGR_SXX": true, "REGR_SXY": true, "REGR_SYY": true, "REINDEX": true, "RELATIVE": true, "RELEASE": true, "RENAME": true, "REPEATABLE": true, "REPLACE": true, "REPLICA": true, "REQUIRING": true, "RESET": true, "RESPECT": true, "RESTART": true, "RESTORE": true, "RESTRICT": true, "RESULT": true, "RETURN": true, "RETURNED_CARDINALITY": true, "RETURNED_LENGTH": true, "RETURNED_OCTET_LENGTH": true, "RETURNED_SQLSTATE": true, "RETURNING": true, "RETURNS": true, "REVOKE": true, "RIGHT": true, "ROLE": true, "ROLLBACK": true, "ROLLUP": true, "ROUTINE": true, "ROUTINE_CATALOG": true, "ROUTINE_NAME": true, "ROUTINE_SCHEMA": true, "ROW": true, "ROWS": true, "ROW_COUNT": true, "ROW_NUMBER": true, "RULE": true, "SAVEPOINT": true, "SCALE": true, "SCHEMA": true, "SCHEMA_NAME": true, "SCOPE": true, "SCOPE_CATALOG": true, "SCOPE_NAME": true, "SCOPE_SCHEMA": true, "SCROLL": true, "SEARCH": true, "SECOND": true, "SECTION": true, "SECURITY": true, "SELECT": true, "SELECTIVE": true, "SELF": true, "SENSITIVE": true, "SEQUENCE": true, "SEQUENCES": true, "SERIALIZABLE": true, "SERVER": true, "SERVER_NAME": true, "SESSION": true, "SESSION_USER": true, "SET": true, "SETOF": true, "SETS": true, "SHARE": true, "SHOW": true, "SIMILAR": true, "SIMPLE": true, "SIZE": true, "SMALLINT": true, "SNAPSHOT": true, "SOME": true, "SOURCE": true, "SPACE": true, "SPECIFIC": true, "SPECIFICTYPE": true, "SPECIFIC_NAME": true, "SQL": true, "SQLCODE": true, "SQLERROR": true, "SQLEXCEPTION": true, "SQLSTATE": true, "SQLWARNING": true, "SQRT": true, "STABLE": true, "STANDALONE": true, "START": true, "STATE": true, "STATEMENT": true, "STATIC": true, "STATISTICS": true, "STDDEV_POP": true, "STDDEV_SAMP": true, "STDIN": true, "STDOUT": true, "STORAGE": true, "STRICT": true, "STRIP": true, "STRUCTURE": true, "STYLE": true, "SUBCLASS_ORIGIN": true, "SUBMULTISET": true, "SUBSTRING": true, "SUBSTRING_REGEX": true, "SUCCEEDS": true, "SUM": true, "SYMMETRIC": true, "SYSID": true, "SYSTEM": true, "SYSTEM_TIME": true, "SYSTEM_USER": true, "T": true, "TABLE": true, "TABLES": true, "TABLESAMPLE": true, "TABLESPACE": true, "TABLE_NAME": true, "TEMP": true, "TEMPLATE": true, "TEMPORARY": true, "TEXT": true, "THEN": true, "TIES": true, "TIME": true, "TIMESTAMP": true, "TIMEZONE_HOUR": true, "TIMEZONE_MINUTE": true, "TO": true, "TOKEN": true, "TOP_LEVEL_COUNT": true, "TRAILING": true, "TRANSACTION": true, "TRANSACTIONS_COMMITTED": true, "TRANSACTIONS_ROLLED_BACK": true, "TRANSACTION_ACTIVE": true, "TRANSFORM": true, "TRANSFORMS": true, "TRANSLATE": true, "TRANSLATE_REGEX": true, "TRANSLATION": true, "TREAT": true, "TRIGGER": true, "TRIGGER_CATALOG": true, "TRIGGER_NAME": true, "TRIGGER_SCHEMA": true, "TRIM": true, "TRIM_ARRAY": true, "TRUE": true, "TRUNCATE": true, "TRUSTED": true, "TYPE": true, "TYPES": true, "UESCAPE": true, "UNBOUNDED": true, "UNCOMMITTED": true, "UNDER": true, "UNENCRYPTED": true, "UNION": true, "UNIQUE": true, "UNKNOWN": true, "UNLINK": true, "UNLISTEN": true, "UNLOGGED": true, "UNNAMED": true, "UNNEST": true, "UNTIL": true, "UNTYPED": true, "UPDATE": true, "UPPER": true, "URI": true, "USAGE": true, "USER": true, "USER_DEFINED_TYPE_CATALOG": true, "USER_DEFINED_TYPE_CODE": true, "USER_DEFINED_TYPE_NAME": true, "USER_DEFINED_TYPE_SCHEMA": true, "USING": true, "VACUUM": true, "VALID": true, "VALIDATE": true, "VALIDATOR": true, "VALUE": true, "VALUES": true, "VALUE_OF": true, "VARBINARY": true, "VARCHAR": true, "VARIADIC": true, "VARYING": true, "VAR_POP": true, "VAR_SAMP": true, "VERBOSE": true, "VERSION": true, "VERSIONING": true, "VIEW": true, "VOLATILE": true, "WHEN": true, "WHENEVER": true, "WHERE": true, "WHITESPACE": true, "WIDTH_BUCKET": true, "WINDOW": true, "WITH": true, "WITHIN": true, "WITHOUT": true, "WORK": true, "WRAPPER": true, "WRITE": true, "XML": true, "XMLAGG": true, "XMLATTRIBUTES": true, "XMLBINARY": true, "XMLCAST": true, "XMLCOMMENT": true, "XMLCONCAT": true, "XMLDECLARATION": true, "XMLDOCUMENT": true, "XMLELEMENT": true, "XMLEXISTS": true, "XMLFOREST": true, "XMLITERATE": true, "XMLNAMESPACES": true, "XMLPARSE": true, "XMLPI": true, "XMLQUERY": true, "XMLROOT": true, "XMLSCHEMA": true, "XMLSERIALIZE": true, "XMLTABLE": true, "XMLTEXT": true, "XMLVALIDATE": true, "YEAR": true, "YES": true, "ZONE": true, } // DefaultPostgresSchema default postgres schema DefaultPostgresSchema = "public" ) const postgresPublicSchema = "public" type postgres struct { core.Base } func (db *postgres) Init(d *core.DB, uri *core.Uri, drivername, dataSourceName string) error { err := db.Base.Init(d, db, uri, drivername, dataSourceName) if err != nil { return err } if db.Schema == "" { db.Schema = DefaultPostgresSchema } return nil } func (db *postgres) SqlType(c *core.Column) string { var res string switch t := c.SQLType.Name; t { case core.TinyInt: res = core.SmallInt return res case core.Bit: res = core.Boolean return res case core.MediumInt, core.Int, core.Integer: if c.IsAutoIncrement { return core.Serial } return core.Integer case core.BigInt: if c.IsAutoIncrement { return core.BigSerial } return core.BigInt case core.Serial, core.BigSerial: c.IsAutoIncrement = true c.Nullable = false res = t case core.Binary, core.VarBinary: return core.Bytea case core.DateTime: res = core.TimeStamp case core.TimeStampz: return "timestamp with time zone" case core.Float: res = core.Real case core.TinyText, core.MediumText, core.LongText: res = core.Text case core.NVarchar: res = core.Varchar case core.Uuid: res = core.Uuid case core.Blob, core.TinyBlob, core.MediumBlob, core.LongBlob: return core.Bytea case core.Double: return "DOUBLE PRECISION" default: if c.IsAutoIncrement { return core.Serial } res = t } hasLen1 := (c.Length > 0) hasLen2 := (c.Length2 > 0) if hasLen2 { res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")" } else if hasLen1 { res += "(" + strconv.Itoa(c.Length) + ")" } return res } func (db *postgres) SupportInsertMany() bool { return true } func (db *postgres) IsReserved(name string) bool { _, ok := postgresReservedWords[name] return ok } func (db *postgres) Quote(name string) string { name = strings.Replace(name, ".", `"."`, -1) return "\"" + name + "\"" } func (db *postgres) QuoteStr() string { return "\"" } func (db *postgres) AutoIncrStr() string { return "" } func (db *postgres) SupportEngine() bool { return false } func (db *postgres) SupportCharset() bool { return false } func (db *postgres) IndexOnTable() bool { return false } func (db *postgres) IndexCheckSql(tableName, idxName string) (string, []interface{}) { if len(db.Schema) == 0 { args := []interface{}{tableName, idxName} return `SELECT indexname FROM pg_indexes WHERE tablename = ? AND indexname = ?`, args } args := []interface{}{db.Schema, tableName, idxName} return `SELECT indexname FROM pg_indexes ` + `WHERE schemaname = ? AND tablename = ? AND indexname = ?`, args } func (db *postgres) TableCheckSql(tableName string) (string, []interface{}) { if len(db.Schema) == 0 { args := []interface{}{tableName} return `SELECT tablename FROM pg_tables WHERE tablename = ?`, args } args := []interface{}{db.Schema, tableName} return `SELECT tablename FROM pg_tables WHERE schemaname = ? AND tablename = ?`, args } func (db *postgres) ModifyColumnSql(tableName string, col *core.Column) string { if len(db.Schema) == 0 { return fmt.Sprintf("alter table %s ALTER COLUMN %s TYPE %s", tableName, col.Name, db.SqlType(col)) } return fmt.Sprintf("alter table %s.%s ALTER COLUMN %s TYPE %s", db.Schema, tableName, col.Name, db.SqlType(col)) } func (db *postgres) DropIndexSql(tableName string, index *core.Index) string { quote := db.Quote idxName := index.Name tableName = strings.Replace(tableName, `"`, "", -1) tableName = strings.Replace(tableName, `.`, "_", -1) if !strings.HasPrefix(idxName, "UQE_") && !strings.HasPrefix(idxName, "IDX_") { if index.Type == core.UniqueType { idxName = fmt.Sprintf("UQE_%v_%v", tableName, index.Name) } else { idxName = fmt.Sprintf("IDX_%v_%v", tableName, index.Name) } } if db.Uri.Schema != "" { idxName = db.Uri.Schema + "." + idxName } return fmt.Sprintf("DROP INDEX %v", quote(idxName)) } func (db *postgres) IsColumnExist(tableName, colName string) (bool, error) { args := []interface{}{db.Schema, tableName, colName} query := "SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_schema = $1 AND table_name = $2" + " AND column_name = $3" if len(db.Schema) == 0 { args = []interface{}{tableName, colName} query = "SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = $1" + " AND column_name = $2" } db.LogSQL(query, args) rows, err := db.DB().Query(query, args...) if err != nil { return false, err } defer rows.Close() return rows.Next(), nil } func (db *postgres) GetColumns(tableName string) ([]string, map[string]*core.Column, error) { args := []interface{}{tableName} s := `SELECT column_name, column_default, is_nullable, data_type, character_maximum_length, numeric_precision, numeric_precision_radix , CASE WHEN p.contype = 'p' THEN true ELSE false END AS primarykey, CASE WHEN p.contype = 'u' THEN true ELSE false END AS uniquekey FROM pg_attribute f JOIN pg_class c ON c.oid = f.attrelid JOIN pg_type t ON t.oid = f.atttypid LEFT JOIN pg_attrdef d ON d.adrelid = c.oid AND d.adnum = f.attnum LEFT JOIN pg_namespace n ON n.oid = c.relnamespace LEFT JOIN pg_constraint p ON p.conrelid = c.oid AND f.attnum = ANY (p.conkey) LEFT JOIN pg_class AS g ON p.confrelid = g.oid LEFT JOIN INFORMATION_SCHEMA.COLUMNS s ON s.column_name=f.attname AND c.relname=s.table_name WHERE c.relkind = 'r'::char AND c.relname = $1%s AND f.attnum > 0 ORDER BY f.attnum;` var f string if len(db.Schema) != 0 { args = append(args, db.Schema) f = " AND s.table_schema = $2" } s = fmt.Sprintf(s, f) db.LogSQL(s, args) rows, err := db.DB().Query(s, args...) if err != nil { return nil, nil, err } defer rows.Close() cols := make(map[string]*core.Column) colSeq := make([]string, 0) for rows.Next() { col := new(core.Column) col.Indexes = make(map[string]int) var colName, isNullable, dataType string var maxLenStr, colDefault, numPrecision, numRadix *string var isPK, isUnique bool err = rows.Scan(&colName, &colDefault, &isNullable, &dataType, &maxLenStr, &numPrecision, &numRadix, &isPK, &isUnique) if err != nil { return nil, nil, err } //fmt.Println(args, colName, isNullable, dataType, maxLenStr, colDefault, numPrecision, numRadix, isPK, isUnique) var maxLen int if maxLenStr != nil { maxLen, err = strconv.Atoi(*maxLenStr) if err != nil { return nil, nil, err } } col.Name = strings.Trim(colName, `" `) if colDefault != nil || isPK { if isPK { col.IsPrimaryKey = true } else { col.Default = *colDefault } } if colDefault != nil && strings.HasPrefix(*colDefault, "nextval(") { col.IsAutoIncrement = true } col.Nullable = (isNullable == "YES") switch dataType { case "character varying", "character": col.SQLType = core.SQLType{Name: core.Varchar, DefaultLength: 0, DefaultLength2: 0} case "timestamp without time zone": col.SQLType = core.SQLType{Name: core.DateTime, DefaultLength: 0, DefaultLength2: 0} case "timestamp with time zone": col.SQLType = core.SQLType{Name: core.TimeStampz, DefaultLength: 0, DefaultLength2: 0} case "double precision": col.SQLType = core.SQLType{Name: core.Double, DefaultLength: 0, DefaultLength2: 0} case "boolean": col.SQLType = core.SQLType{Name: core.Bool, DefaultLength: 0, DefaultLength2: 0} case "time without time zone": col.SQLType = core.SQLType{Name: core.Time, DefaultLength: 0, DefaultLength2: 0} case "oid": col.SQLType = core.SQLType{Name: core.BigInt, DefaultLength: 0, DefaultLength2: 0} default: col.SQLType = core.SQLType{Name: strings.ToUpper(dataType), DefaultLength: 0, DefaultLength2: 0} } if _, ok := core.SqlTypes[col.SQLType.Name]; !ok { return nil, nil, fmt.Errorf("Unknown colType: %v", dataType) } col.Length = maxLen if col.SQLType.IsText() || col.SQLType.IsTime() { if col.Default != "" { col.Default = "'" + col.Default + "'" } else { if col.DefaultIsEmpty { col.Default = "''" } } } cols[col.Name] = col colSeq = append(colSeq, col.Name) } return colSeq, cols, nil } func (db *postgres) GetTables() ([]*core.Table, error) { args := []interface{}{} s := "SELECT tablename FROM pg_tables" if len(db.Schema) != 0 { args = append(args, db.Schema) s = s + " WHERE schemaname = $1" } db.LogSQL(s, args) rows, err := db.DB().Query(s, args...) if err != nil { return nil, err } defer rows.Close() tables := make([]*core.Table, 0) for rows.Next() { table := core.NewEmptyTable() var name string err = rows.Scan(&name) if err != nil { return nil, err } table.Name = name tables = append(tables, table) } return tables, nil } func (db *postgres) GetIndexes(tableName string) (map[string]*core.Index, error) { args := []interface{}{tableName} s := fmt.Sprintf("SELECT indexname, indexdef FROM pg_indexes WHERE tablename=$1") if len(db.Schema) != 0 { args = append(args, db.Schema) s = s + " AND schemaname=$2" } db.LogSQL(s, args) rows, err := db.DB().Query(s, args...) if err != nil { return nil, err } defer rows.Close() indexes := make(map[string]*core.Index, 0) for rows.Next() { var indexType int var indexName, indexdef string var colNames []string err = rows.Scan(&indexName, &indexdef) if err != nil { return nil, err } indexName = strings.Trim(indexName, `" `) if strings.HasSuffix(indexName, "_pkey") { continue } if strings.HasPrefix(indexdef, "CREATE UNIQUE INDEX") { indexType = core.UniqueType } else { indexType = core.IndexType } cs := strings.Split(indexdef, "(") colNames = strings.Split(cs[1][0:len(cs[1])-1], ",") var isRegular bool if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) { newIdxName := indexName[5+len(tableName):] isRegular = true if newIdxName != "" { indexName = newIdxName } } index := &core.Index{Name: indexName, Type: indexType, Cols: make([]string, 0)} for _, colName := range colNames { index.Cols = append(index.Cols, strings.Trim(colName, `" `)) } index.IsRegular = isRegular indexes[index.Name] = index } return indexes, nil } func (db *postgres) Filters() []core.Filter { return []core.Filter{&core.IdFilter{}, &core.QuoteFilter{}, &core.SeqFilter{Prefix: "$", Start: 1}} } type pqDriver struct { } type values map[string]string func (vs values) Set(k, v string) { vs[k] = v } func (vs values) Get(k string) (v string) { return vs[k] } func parseURL(connstr string) (string, error) { u, err := url.Parse(connstr) if err != nil { return "", err } if u.Scheme != "postgresql" && u.Scheme != "postgres" { return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme) } escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`) if u.Path != "" { return escaper.Replace(u.Path[1:]), nil } return "", nil } func parseOpts(name string, o values) error { if len(name) == 0 { return fmt.Errorf("invalid options: %s", name) } name = strings.TrimSpace(name) ps := strings.Split(name, " ") for _, p := range ps { kv := strings.Split(p, "=") if len(kv) < 2 { return fmt.Errorf("invalid option: %q", p) } o.Set(kv[0], kv[1]) } return nil } func (p *pqDriver) Parse(driverName, dataSourceName string) (*core.Uri, error) { db := &core.Uri{DbType: core.POSTGRES} var err error if strings.HasPrefix(dataSourceName, "postgresql://") || strings.HasPrefix(dataSourceName, "postgres://") { db.DbName, err = parseURL(dataSourceName) if err != nil { return nil, err } } else { o := make(values) err = parseOpts(dataSourceName, o) if err != nil { return nil, err } db.DbName = o.Get("dbname") } if db.DbName == "" { return nil, errors.New("dbname is empty") } return db, nil }